2009-06-02

PATRIOT SCIENTIFIC CORPORATION ANNOUNCES SANYO'S PURCHASE OF A MOORE MICROPROCESSOR PATENT™ PORTFOLIO LICENSE

June 2, 2009 -- CARLSBAD, Calif.-- Patriot Scientific Corporation (OTC BB:PTSC) announced today that SANYO Electric Co. Ltd. has purchased a Moore Microprocessor Patent(tm) (MMP) Portfolio license from The TPL Group. SANYO joins a distinguished list of global systems manufacturers that have become MMP Licensees.

"We are pleased to see SANYO Electric, a major consumer electronics manufacturer, join the growing list of worldwide MMP licensees" said Rick Goerner, Patriot Scientific President and CEO.

The sweeping scope of applications using MMP Portfolio design techniques continues to encourage the world's leading manufacturers of end-user products from around the globe to become MMP Portfolio licensees. Over 55 global companies from the US, Europe, Japan, Korea and Taiwan have licensed the MMP Portfolio technologies.

The MMP Portfolio patents cover techniques that enable higher performance and lower cost designs, and are fundamental 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.

About the MMP Portfolio
The Moore Microprocessor Patent Portfolio contains intellectual property that is jointly owned by the privately-held TPL Group and publicly-held Patriot Scientific Corporation (OTCBB: PTSC). The MMP Portfolio includes seven U.S. patents as well as their European and Japanese counterparts. It is widely recognized that the MMP Portfolio protects fundamental technology used in microprocessors, microcontrollers, digital signal processors (DSPs), embedded processors and system-on-chip (SoC) devices. Manufacturers of microprocessor-based products can learn more about how to participate in the MMP Portfolio Licensing Program by contacting: mmp-licensing@alliacense.com.

About Sanyo
SANYO Electric Co., Ltd. is a leading company for energy and environment, providing solutions for energy, environment and lifestyle applications based on its brand vision. SANYO's businesses are divided into three business domains: Energy, Ecology and Electronics. These three areas cover a broad range of products and services such as rechargeable batteries, photovoltaic systems, HVAC/R equipment, digital imaging devices, personal navigation systems, home appliances, electronic components and others. For further information, please visit SANYO's web site at http://sanyo.com.

About Patriot Scientific
Headquartered in Carlsbad, California, Patriot Scientific Corporation provides data sharing and secure data solutions for a connected world. Patriot Scientific addresses the expanding market opportunities in the healthcare, justice and public safety industries through its wholly owned subsidiary Patriot Data Solutions Group, Inc. These growth activities are funded with revenues generated, in a large part, from the continuing successful Moore Microprocessor Patent™ Portfolio licensing partnership with The TPL Group. Patriot Scientific's integrated core intelligence solution addresses the critical data/information sharing needs of the healthcare industry, the Department of Homeland Security, the Department of Justice, and federal, state, and local public safety and law enforcement agencies. For more information on Patriot Scientific Corporation, visit: www.ptsc.com.

Safe Harbor Statement under the Private Securities Litigation Reform Act of 1995: Statements in this news release looking forward in time involve risks and uncertainties, including the risks associated with the effect of changing economic conditions, trends in the products markets, variations in the company's cash flow, market acceptance risks, patent litigation, technical development risks, seasonality and other risk factors detailed in the company's Securities and Exchange Commission filings.

Contact:

Angela Hartley
Patriot Scientific Corporation

760-547-2700 ext. 102