ANALYST DOWNGRADE INCORRECTLY LINKED TO ALTAIR NANOTECHNOLOGIES COMMON STOCK SYMBOL

Reno, NV – September 22, 2005 – Altair Nanotechnologies Inc. (NASDAQ: ALTI), RBC Dain Rauscher issued a downgrade of the common stock price pertaining to a company covered by its research group. The company, which trades on the NASDAQ Trading System, has a common stock symbol similar to that of Altair’s common stock, ALTI.

Due to the similarity of the stock symbols, the downgrade was inadvertently picked up by various newswire services and disseminated under Altair Nanotechnologies’ common stock symbol ALTI. RBC Dain Rauscher’s research group does not provide research coverage on Altair Nanotechnologies nor did the company issue a downgrade of Altair’s stock price.


ABOUT ALTAIR NANOTECHNOLOGIES INC.

Altairnano is a leading supplier and innovator of advanced ceramic nanomaterial technology. Based in Reno, Nevada, Altairnano has assembled a unique team of materials scientists who, coupled in collaborative ventures with industry partners and leading academic centers, have pioneered an array of intellectual property and products.

Altairnano’s robust proprietary technology platforms produce a variety of crystalline and non-crystalline nanomaterials of unique structure, performance, quality and cost. The company has scalable manufacturing capability to meet emerging nanomaterials demands, with the production capacity of hundreds of tons of nanomaterials.

Altairnano‘s two divisions, Life Sciences and Performance Materials, are focused on applications where its nanotechnology may enable new high growth markets. The Life Sciences Division is pursuing market applications in pharmaceuticals, drug delivery, dental materials and other medical markets. The Performance Materials Division is focused on market applications in advanced materials for paints and coatings; air and water treatment and alternative energy including new Li Ion battery electrode materials. For additional information on Altairnano and its nanomaterials, visit www.altairnano.com

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