SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934

                          Altair Nanotechnologies, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                      Common Stock, no par value per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    021373105
--------------------------------------------------------------------------------
                                 (CUSIP Number)

                                 J. Rowland Cook
                 Jenkens & Gilchrist, a Professional Corporation
                            2200 One American Center
                               600 Congress Avenue
                               Austin, Texas 78701
                                 (512) 499-3800
--------------------------------------------------------------------------------
                       (Name, Address and Telephone Number
                         of Person Authorized to Receive
                           Notices and Communications)


                                 April 7, 2004*
--------------------------------------------------------------------------------

             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Section  240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

*  See Explanatory Note on page 4.








CUSIP No.  021373105
           ---------

     1.   Names  of  Reporting  Persons,  I.R.S.  Identification  Nos.  of above
          persons (entities only):

                        Toyota on Western, Inc.

     2.   Check the  Appropriate  Box if a Member of a Group (See  Instructions)
          (a) [ ]      (b) |X|

     3.   SEC Use Only
                      ----------------------------------------------------------

     4.   Source of Funds (See instructions)        WC
                                            ------------------------------------

     5.   Check box if Disclosure of Legal  Proceedings is Required  Pursuant to
          Items 2(d) or 2(e) [ ]

     6.   Citizenship or Place of Organization      Illinois
                                              ----------------------------------

                    7.  Sole Voting Power        3,507,058 (consisting of common
     Number of                                              stock and warrants)
     Shares
     Beneficially   8.  Shared Voting Power      ---------
     Owned by Each
     Reporting      9.  Sole Dispositive Power   3,507,058 (consisting of common
     Person With:                                           stock and warrants)
                   10.  Shared Dispositive Power ---------

     11.  Aggregate Amount Beneficially Owned by Each Reporting Person
                   3,507,058 (consisting of common stock and warrants)
          ----------------------------------------------------------------------

     12.  Check if the Aggregate  Amount in Row 11 Excludes  Certain Shares (See
          Instructions)  [ ]

     13.  Percent of Class Represented by Amount in Row 11.
                                7.0% (see Item 5)
          ----------------------------------------------------------------------

     14.  Type of Reporting Person (See Instructions):
                                       CO
          ----------------------------------------------------------------------


                                       2



CUSIP No.  021373105
           ---------

     1.   Names  of  Reporting  Persons,  I.R.S.  Identification  Nos.  of above
          persons (entities only):

                        Louis H. Schnur

     2.   Check the  Appropriate  Box if a Member of a Group (See  Instructions)
          (a) [ ]      (b) |X|

     3.   SEC Use Only
                      ----------------------------------------------------------

     4.   Source of Funds (See instructions)        PF
                                            ------------------------------------

     5.   Check box if Disclosure of Legal  Proceedings is Required  Pursuant to
          Items 2(d) or 2(e)  [ ]

     6.   Citizenship or Place of Organization      United States of America
                                              ----------------------------------

                    7.  Sole Voting Power        5,249,851 (consisting of common
     Number of                                              stock and warrants)
     Shares
     Beneficially   8.  Shared Voting Power      ---------
     Owned by Each
     Reporting      9.  Sole Dispositive Power   5,249,851 (consisting of common
     Person With:                                           stock and warrants)
                   10.  Shared Dispositive Power ---------

     11.  Aggregate Amount Beneficially Owned by Each Reporting Person
                  5,249,851 (consisting of common stock and warrants)
          ----------------------------------------------------------------------

     12.  Check if the Aggregate  Amount in Row 11 Excludes  Certain Shares (See
          Instructions)  [ ]

     13.  Percent of Class Represented by Amount in Row 11.
                                9.9% (see Item 5)
          ----------------------------------------------------------------------

     14.  Type of Reporting Person (See Instructions):
                                       IN
          ----------------------------------------------------------------------


                                       3



                                  Schedule 13D
                                  ------------

EXPLANATORY NOTE

     The  ownership  interests  of Louis H. Schnur and Toyota on  Western,  Inc.
("Toyota  on Western"  and  collectively,  the  "Reporting  Persons")  in Altair
Nanotechnologies,  Inc.  ("Altair")  have  been  reported  in each  of  Altair's
definitive proxy  statements  filed with the Securities and Exchange  Commission
(the  "Commission")  on Schedule 14A pursuant to the Securities and Exchange Act
of 1934,  as amended (the  "Exchange  Act") since 2001.  However,  the Reporting
Persons only recently fully understood their ongoing reporting obligations under
Section 13 of the Exchange  Act.  This filing is being made in  compliance  with
such ongoing reporting requirements under the Exchange Act.

     The failure to timely file this filing with the  Commission was not willful
or deliberate,  but rather as the result of the Reporting Persons not being made
aware that they are deemed under Section 13 to be the beneficial  owner of those
shares of Altair common stock that is not registered or that they have the right
to acquire within 60 days of the date hereof  pursuant to outstanding  warrants.
Of the  5,249,851  shares  of  Altair  common  stock  reported  herein  as being
beneficially  owned by the Reporting  Persons,  3,507,058 shares of common stock
(or approximately 67% of the shares of common stock deemed  beneficially  owned)
represent restricted shares of common stock or shares of common stock underlying
warrants that have not been exercised.

Item 1.  Security and Issuer.

            Altair Nanotechnologies, Inc.
            Common Stock, no par value
            204 Edison Way
            Reno, Nevada  89502

Item 2.  Identity and Background.

     This  Schedule 13D is being filed by Toyota on Western and Louis H. Schnur,
the officer, director and sole shareholder of Toyota on Western.

     Toyota on Western is an Illinois  corporation,  the  principal  business of
which is the  operation of an  automobile  dealership.  The  principal  business
address of Toyota on Western is 6941 South  Western  Avenue,  Chicago,  Illinois
60636.

     Mr. Schnur's principal occupation or employment is serving as the President
of Toyota on Western.  Mr.  Schnur is a citizen of the United  States of America
and his  principal  business  address is 6941  South  Western  Avenue,  Chicago,
Illinois 60636.

     The  Reporting  Persons  may be deemed to  comprise  a "group"  within  the
meaning of Section  13(d)(3) of the Exchange Act,  although  neither the fact of
this filing nor any of the information contained herein shall be deemed to be an
admission by any of the Reporting Persons that a "group" exists.

     During the last five  years,  none of the  Reporting  Persons  (i) has been
convicted in a criminal  proceeding  (excluding  traffic  violations  or similar
misdemeanors)  or  (ii)  was a party  to a civil  proceeding  of a  judicial  or


                                       4



administrative body of competent jurisdiction and as a result of such proceeding
was or is  subject  to a  judgment,  decree  or  final  order  enjoining  future
violations  of, or prohibiting  or mandating  activities  subject to, Federal or
State securities laws or finding any violation with respect to such laws.

Item 3.  Source and Amount of Funds or Other Consideration.

     The source of funds used by Toyota on Western  to  purchase  Altair  common
stock and warrants is Working Capital of Toyota on Western.  As used herein, the
term  "Working  Capital"  includes  income from the business  operations  of the
entity plus sums borrowed  from,  among other  sources,  banks,  to operate such
business in general.  Mr. Schnur used his personal  funds to purchase his shares
of Altair common stock and warrants.

Item 4.  Purpose of Transaction.

     Subject to the statements below in this Item 4, the Reporting  Persons hold
their shares of Altair common stock for investment.  The Reporting  Persons may,
subject to market conditions and other factors deemed relevant to them, purchase
additional  shares of common  stock from time to time in open market  purchases,
privately  negotiated  transactions  or  otherwise.  In addition,  the Reporting
Persons do intend from  time-to-time  to monitor the terms of the warrants  they
hold and if the market  conditions  are  favorable,  to exercise  certain of the
warrants, subject to the 9.9% limitation described in Item 5, below.

     The  Reporting  Persons  intend to review,  on a  continuing  basis,  their
investment  in Altair  common  stock and their  business  affairs and  financial
conditions, as well as conditions in the securities markets and general economic
and  industry  conditions.  The  Reporting  Persons  may in the future take such
actions with  respect to their  investment  in Altair  common stock as they deem
appropriate in light of the circumstances existing from time to time, including,
without  limitation,  purchasing  additional shares of common stock,  exercising
warrants or  disposing  of the shares of common stock they now hold or hereafter
acquire.

     Except as described  below,  the Reporting  Persons have not formulated any
plans or  proposals  of the type  referred  to in clauses (a) - (j) of Item 4 of
Schedule 13D.

     Mr. Schnur has submitted a shareholder  proposal to Altair pursuant to Rule
14a-8 under the Exchange Act. At present,  the proposal and supporting statement
read as follows:

     Proposal
     --------

          That the Company (1) make a greater  effort to identify  and  nominate
     candidates  for director who have  meaningful  knowledge and  experience in
     nanotechnology  or high tech industries;  and (2) issue a report describing
     its efforts to identify and recruit  director  nominees who have meaningful
     knowledge and experience in  nanotechnology  or high tech  industries,  its
     criteria  for board  qualification,  and the  process  of  selecting  board
     candidates and committee members.


                                       5



     Supporting Statement
     --------------------

          Within  recent  periods,  the  Company  has  dramatically  altered its
     business focus from mining to the  development of  nanotechnologies.  Given
     this change,  the Company  should make an effort to recruit  directors with
     knowledge  and  experience  in  nanotechnology  and high  tech  industries.
     Shareholder value should be better served by having these changes made.

     Altair has  indicated  that it does not support the  proposal as  presently
written;  however,  Mr. Schnur is in discussions with Altair  representatives to
determine  whether  the  proposal  might be revised in a manner that would cause
Altair to  support  it.  Mr.  Schnur's  present  intent is to have the  proposal
included in the Altair proxy statement for the 2004 annual meeting and presented
for a shareholder vote at that meeting.

     Mr.  Schnur was  encouraged  by Altair's  December  19, 2003  restructuring
announcement,  and he  believes  shareholder  value will be  maximized  with the
immediate  termination of mining  directors and employees.  Whereas Altair has a
"deficit  accumulated  during the development stage" (April 9, 1973-December 31,
2003) of $46,213,413,  Mr. Schnur believes that the mining business  segment may
be responsible for up to approximately $30,000,000 of those deficits.

     Mr. Schnur does not believe that Altair should spin-off the mining projects
to Altair  shareholders,  and suggests  instead that the centrifugal jib and the
Tennessee mining project be sold to third parties in 2004, by public auction, if
necessary.  He believes the economic  potential of the mining  projects does not
justify   continued   expenditures   for  mining   personnel,   lease  payments,
environmental and liability lawsuit risks,  field support for the jig in Africa,
and other expenses.

     The Reporting  Persons are monitoring  Altair's actions and progress on the
topics  described  above in this Item 4 but,  other than  continued  discussions
concerning the shareholder  proposal,  they have made no  determinations at this
time on whether to pursue any additional steps.

Item 5.  Interest in Securities of the Issuer.

     Pursuant to Rule  13d-3(a),  at the close of business on April 7, 2004, the
Reporting  Persons  collectively  may be  deemed to be the  beneficial  owner of
2,139,829  shares of Altair common  stock,  and  3,110,022  warrants;  provided,
however, the warrants are subject to a provision prohibiting the exercise of any
warrants if, after such exercise,  the Reporting Persons would  beneficially own
more than 9.99% of outstanding shares of Altair common stock.

     A report  filed by Altair on Form 10-K states  that  Altair had  48,650,140
shares of common stock outstanding as of March 15, 2004. If all warrants held by
the  Reporting  Persons  that could be  exercised  in fact were  exercised,  the
Reporting  Persons  would  have 9.9% of  Altair's  outstanding  shares of common
stock.

     As of the date of this Schedule,  the collective  holdings of the Reporting
Persons of Altair common stock and warrants are as follows:


                                       6



          Unrestricted shares                                     566,300
          Restricted shares                                     1,573,529
          Exercisable warrants                                  1,536,493
          Restricted warrants                                   1,573,529
                                                                ---------
          Total                                                 5,249,851

     Mr. Schnur has engaged in the following transactions in Altair common stock
during the 60 days preceding this filing:

        Date             Transaction        Number of Shares       Average Price

   February 3, 2004       Purchased              44,970                $3.41
   February 4, 2004       Purchased             276,411                $2.99
   March 16, 2004         Purchased             138,035                $2.68
   March 19, 2004         Purchased              70,765                $2.43
   April 1, 2004            Sold                 40,000                $3.15
   April 2, 2004            Sold                 20,000                $3.30

     The Reporting Persons hold warrants as follows:

     (a)  A warrant to acquire  50,000 shares of common stock at $2.00 per share
          was  purchased  by Mr.  Schnur from Altair on December 14, 2001 and is
          exercisable within 60 days of the filing of this Schedule 13D.

     (b)  A warrant to acquire 250,000 shares of common stock at $2.50 per share
          was  purchased  by Mr.  Schnur from Altair on December 14, 2001 and is
          exercisable within 60 days of the filing of this Schedule 13D.

     (c)  A warrant to acquire 225,297 shares of common stock at $1.50 per share
          was  purchased  by Mr.  Schnur  from  Altair on April 26,  2002 and is
          exercisable within 60 days of the filing of this Schedule 13D.

     (d)  A warrant to acquire 445,297 shares of common stock at $2.00 per share
          was  purchased  by Mr.  Schnur  from  Altair on April 26,  2002 and is
          exercisable within 60 days of the filing of this Schedule 13D.

     (e)  A warrant to acquire 445,297 shares of common stock at $2.50 per share
          was  purchased  by Mr.  Schnur  from  Altair on April 26,  2002 and is
          exercisable within 60 days of the filing of this Schedule 13D.

     (f)  A warrant to acquire 120,602 shares of common stock at $1.00 per share
          was  purchased  by Mr.  Schnur  from  Altair  on May  9,  2003  and is
          exercisable within 60 days of the filing of this Schedule 13D.

     (g)  A warrant to  acquire  1,573,529  shares of common  stock at $1.00 per
          share was purchased by Western on Toyota from Altair on March 31, 2003
          and is exercisable  within 60 days of the filing of this Schedule 13D,
          assuming  that  the  underlying  shares  of  common  stock  have  been
          registered  (they have not) or that an exemption from  registration is
          available.


                                       7



Item 6.  Contracts, Arrangements, Understandings or Relationships with Respect
         to Securities of the Issuer.

     None.

Item 7.  Materials Filed as Exhibits.

     Agreement  between  Louis H. Schnur and Toyota on  Western,  Inc. to make a
single, joint filing of this Schedule 13D.

                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

Date:  April 7, 2004.


                                                          /s/
                                      ------------------------------------------
                                      LOUIS H. SCHNUR


                                      TOYOTA ON WESTERN, INC.



                                      By:                 /s/
                                         ---------------------------------------
                                         Louis H. Schnur, President


                                       8