CDTi's Catalyzed Diesel Particulate Filter Technology Approved for Patent Grant

CDTi's Catalyzed Diesel Particulate Filter Technology Approved for Patent

VENTURA, Calif., Nov. 8, 2012 (GLOBE NEWSWIRE) -- Clean Diesel Technologies,
Inc. (Nasdaq:CDTI) ("CDTi"), a cleantech emissions control company, is pleased
to announce that its Catalyst Division was notified by the United States
Patent and Trademark Office that its platinum group metal-free catalyzed
diesel particulate filter ("DPF") technology has been approved for patent.
When combined with a diesel oxidation catalyst, this breakthrough DPF
technology — which utilizes absolutely no costly platinum group metals, or
"PGMs" — reduces harmful particulate matter produced by diesel engines by over
95 percent.

Various methods to reduce harmful diesel engine exhaust have been used
worldwide in response to increasingly stringent regulations put in place by
government agencies, but these methods generally require the use of precious
metals which are expensive and often have performance limitations. The
granting of this patent is a significant acknowledgement of the unique
performance of CDTi's PGM-free, or "base metal," Mixed Phase Catalyst (MPC®)
technology for the removal of particulate matter, or "soot," from diesel
engines. CDTi believes that with this patent grant, they offer the only low
temperature-burning, PGM-free catalyst technology in the marketplace. The
result is a much more cost effective and efficient solution than competing

"Receipt of this patent grant is an important milestone on our path to
protecting our innovative products based upon our MPC® technology platform,"
said Dr. Steve Golden, Chief Technology Officer of CDTi. "We are pleased about
the expanding commercialization of our base metal catalyzed diesel particulate
filter technology – which began in 2011̶ as it offers a very robust and
proven low-temperature pathway for soot removal. Under the recent London Low
Emission Zone program, our Purifier™ particulate filter systems featuring this
novel technology were installed on over 2,500 vehicles. Perhaps even more
exciting is that we have a new Purifilter® product utilizing this technology
which is currently being evaluated by the California Air Resources Board
("CARB") and Environmental Protection Agency and we expect to receive their
product verifications in the near future. Verification of this product will
broaden our portfolio of solutions available to fleet owners for the
retrofitting of their vehicles under the current CARB truck and Bus mandate."

CDTI's patented and patent-pending technologies are suitable for OEM and
retrofit vehicle applications, such as on-road trucks and buses as well as
numerous off-road applications, including construction, mining, ports and
material handling.

About CDTi

CDTi is a vertically integrated global manufacturer and distributor of
emissions control systems and products, focused on the heavy duty diesel and
light duty vehicle markets. CDTi utilizes its proprietary patented Mixed Phase
Catalyst (MPC®) technology, as well as its ARIS® selective catalytic
reduction, Platinum Plus® fuel-borne catalyst, and other technologies to
provide high-value sustainable solutions to reduce emissions, increase energy
efficiency and lower the carbon intensity of on- and off-road engine
applications. CDTi is headquartered in Ventura, California and currently has
operations in the U.S., Canada, U.K., France, Japan and Sweden. For more
information, please visit

The CDTi logo is available at

Forward-Looking Statements Safe Harbor

Certain statements in this news release, such as statements regarding CDTi's
patent portfolio, the impact of the granting of new patents, the competitive
landscape pertaining to such patents and technology, the receipt of regulatory
approvals and the impact of such approvals constitute "forward-looking
statements" within the meaning of the Private Securities Litigation Reform Act
of 1995. Such forward-looking statements involve known or unknown risks,
including those detailed in CDTi's filings with the U.S. Securities and
Exchange Commission, uncertainties and other factors that may cause the actual
results, performance or achievements of CDTi to be materially different from
any future results, performance or achievements expressed or implied by such
forward-looking statements. Readers are cautioned not to place undue reliance
on these forward-looking statements, which speak only as of the date hereof.
CDTi assumes no obligation to update the forward-looking information contained
in this release.

CONTACT: Kristi Cushing, Investor Relations Manager
         Tel: +1 (805) 639-9555

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