Patriot Scientific Growth Strategy Advances as Kenwood Joins Steadily Expanding Roster of MMP Patent Portfolio Licensees

Agreement With Ninth Major Manufacturer In As Many Months Demonstrates Broad Market Potential of Fundamental MMP Portfolio Technologies

CARLSBAD, Calif. -- Sept. 20, 2006-- Patriot Scientific Corporation (OTC Bulletin Board: PTSCE) confirmed today that Kenwood Corporation has become the ninth major manufacturer in as many months to purchase a license to use the Moore Microprocessor Patent(TM) (MMP) Portfolio. The agreement is an example of the versatility and breadth of the MMP portfolio and the sizeable potential market for its fundamental technologies among major manufacturers. Patriot Scientific and The TPL Group are co-owners of the MMP Portfolio, which Alliacense(TM), a TPL Group enterprise, exclusively manages.

Kenwood becomes the first MMP Portfolio licensee in the automotive electronics supplier market, according to Alliacense. "As the sole manufacturer simultaneously doing business in automotive electronics, communications equipment and home electronics, Kenwood has maintained its global leadership for more than half a century," said Mike Davis, Alliacense Sr. Vice President, Licensing. Davis applauded Kenwood's management for quickly recognizing the need to purchase an MMP Portfolio license, citing the competitive edge that can be gained by acting sooner rather than later.

Eight other major manufacturers have purchased MMP licenses this year, including Casio, Fujitsu, HP, Seiko Epson, Sony, Nikon, PENTAX and Olympus. In addition, AMD and Intel are also licensees. More than 300 companies have been contacted regarding likely infringement of one or more patents included in the MMP portfolio.

"Patriot Scientific continues to boost its financial position with the signing of each license agreement as we prepare for the next stage of growth," said David Pohl, Patriot Scientific chairman and CEO. "We are actively evaluating possible opportunities to diversify our revenue stream by developing new technologies, entering into joint ventures or by acquiring other companies and technologies."

The MMP Portfolio patents, filed in the 1980s, cover techniques that have become essential to consumer and commercial digital systems ranging from DVD players, cell phones and portable music players, to communications infrastructure, medical equipment and automobiles -- which today have dozens of microprocessor-based key features and benefits.

"IP licensing companies have greater opportunities for sustained growth and success if they have multiple resources of IP to tap into," said Morry Marshall, vice president of Semico. "The combination of Patriot's legacy technologies developed in-house and its jointly owned portfolio with TPL Group leave it well positioned for the future."

"The MMP Portfolio is only one element of the multifaceted Patriot Scientific story and business strategy," said Jim Turley, independent analyst and member of the Patriot Scientific board of directors. "The licensing revenues from the MMP Portfolio provide the company with a strong foundation so it can explore the multiple options available for its next stage of growth and development."

About Patriot Scientific

Patriot Scientific is a leading intellectual property licensing company that develops, markets and enables innovative technologies to address the demands in fast-growing markets such as wireless devices, smart cards, home appliances and gateways, set-top boxes, entertainment technology, automotive telematics, biomedical devices and industrial controllers. Headquartered in Carlsbad, Calif., information about the company can be found at http://www.ptsc.com.

Copies of Patriot Scientific press releases, current price quotes, stock charts and other valuable information for investors may be found at http://www.hawkassociates.com and http://www.americanmicrocaps.com. An investment profile on Patriot Scientific may be found at http://www.hawkassociates.com/ptscprofile.aspx.

About the Patent Portfolio

The patent portfolio, marketed as the Moore Microprocessor Patent Portfolio, contains intellectual property that is jointly owned by the publicly held Patriot Scientific Corporation and the privately held TPL Group. The portfolio encompasses seven U.S. patents as well as their European and Japanese counterparts. Both TPL and Patriot assert that their jointly owned patents protect techniques used in designing microprocessors, microcontrollers, Digital Signal Processors (DSPs), embedded processors and System-on-Chip (SoC) implementations. The MMP Portfolio is exclusively managed by Alliacense, a TPL Group Enterprise.

About Alliacense

Alliacense is a TPL Group Enterprise executing best-in-class design and implementation of intellectual property licensing programs. As a cadre of IP licensing strategists, technology experts and experienced business development/management executives, Alliacense focuses on expanding the awareness and value of TPL's intellectual property portfolios. For more information, visit http://www.alliacense.com.