Item 1.01 Entry into Material Definitive Agreement

On May 22, 2009, Altair Nanotechnologies Inc. (the "Company") signed a contract with the Office of Naval Research ("ONR") for $3,802,380 for the further development of battery backup power systems in naval applications. Under the terms of the Contract which runs through July 1, 2010, the Company will construct and deliver a 500-kW energy-storage unit for operational testing by ONR and then demonstrate the performance and safety attributes of the energy-storage unit. A copy of the Contract is furnished as Exhibit 99.1 to this Current Report.

Item 7.01 Regulation FD Disclosure.

On May 28, 2009, Altair issued a press release announcing signing of the Contract. A copy of the press release is furnished as Exhibit 99.2 to this Current Report.

The information in this Current Report (including exhibits 99.1 and 99.2) shall not be deemed to be "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing made by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

99.1 Contract dated May 22, 2009 with the Office of Naval Research.

99.2 Press release issued by Altair Nanotechnologies, Inc. dated May 28, 2009 entitled "Office of Naval Research awards Altair Nanotechnologies $3.8M contract for second phase of groundbreaking shipboard UPS system."

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