GlobeNewswire Inc | Dec 8, 2021 10:00AM EST

December 08, 2021

LAFOX, Ill., Dec. 08, 2021 (GLOBE NEWSWIRE) -- Richardson Electronics, Ltd. (NASDAQ: RELL), a global provider of engineered solutions for renewable energies, is pleased to announce the issuance of U.S. Patent No. 11,193,471 (the 471 Patent). The 471 Patent is a result of Richardson's innovative solutions for replacing batteries in wind turbine pitch systems. The 471 Patent is the second patent covering these solutions with additional patents still pending. Richardson's solution is embodied in its market-leading solution, the ULTRA3000 Pitch Energy Module (PEM). The ULTRA3000PEM is an ultracapacitor-based plug-and-play replacement for batteries in wind turbine generator pitch systems. The ULTRA3000PEM is a direct one-for-one replacement for batteries and chargers that can be installed with no modifications to the battery box.

"We are pleased the U.S. Patent Office continues to recognize the innovations found in our ULTRA3000 PEM. The Richardson engineering team worked hard to create a true plug-and-play product which is environmentally friendly and easily installed," stated Richardson's Greg Peloquin, Executive Vice-President, Power & Microwave Technologies Group. "We are proud to provide a cost-effective, improved solution for replacing batteries in wind turbine pitch systems."

About Richardson Electronics, Ltd.Richardson Electronics, Ltd. is a leading global provider of engineered solutions, power grid and microwave tubes, and related consumables; power conversion and RF and microwave components; flat panel detector solutions and replacement parts for diagnostic imaging equipment; and customized display solutions. We serve customers in the alternative energy, healthcare, aviation, broadcast, communications, industrial, marine, medical, military, scientific, and semiconductor markets. The Company's strategy is to provide specialized technical expertise and "engineered solutions" based on our core engineering and manufacturing capabilities. The Company provides solutions and adds value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repair through its global infrastructure. More information is available at www.rell.com. Richardson Electronics common stock trades on the NASDAQ Global Select Market under the ticker symbol RELL.

About Richardson Electronics Power & Microwave TechnologiesFor nearly 75 years, Richardson Electronics has been your industry-leading global provider of engineered solutions, RF & microwave, and power products. With the launch of the Power & Microwave Technologies group, we continue this legacy and complement it with new products from the world's most innovative technology partners. Richardson Electronics' Power & Microwave Technologies group focuses on what we do best: identify and design disruptive technologies, introduce new products on a global basis, develop solutions for our customers, and provide exceptional worldwide support. As a global company, we provide solutions and add value through design-in support, systems integration, prototype design and manufacturing, testing, logistics, and aftermarket technical service and repairall through our existing global infrastructure. More information is available at: www.rellpower.com.

For Details Contact:Greg PeloquinExecutive Vice President Power & Microwave Technologies Phone: (630) 659-8900peloquin@rell.com

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