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Richardson Electronics, Ltd. (RELL)

Nasdaq: RELL · Wholesale-Electronic Parts & Equipment, NEC · Lafox, IL · filing with the SEC since 1994
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Grade5.8
◀ Past 6.2● Present 5.6▶ Future 5.8
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Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

11 patents granted to the 2 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Richardson Electronics, Ltd.’s names, not what it holds today.

Patents granted
11
9 utility, 2 design, 1976 to Dec 31, 2025
Granted in 2025
2
Against 4 in 2024 and 2 in 2023
Applications published
11
3 of them in 2025
Names they are printed under
2
its own name
By yearGrantedApplications published
'21'22'23'24'25
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Electrical machinery, apparatus, energy7
Engines, pumps, turbines2
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name2 counted
Richardson Electronics, Ltd. its own name
US, as the owner printed on each patent
11 granted
0 published
Richardson Electronics, Ltd. its own name
named as the applicant on its applications, in US
0 granted
11 published
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Oct 21, 202512,451,720Hybrid capacitor energy storageElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Sep 9, 202512,410,772Ultracapacitor pitch energy moduleEngines, pumps, turbinesRichardson Electronics, Ltd.
Dec 24, 202412,173,689Ultracapacitor pitch energy moduleEngines, pumps, turbinesRichardson Electronics, Ltd.
Nov 12, 202412,142,424Ultracapacitor generator start moduleElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Nov 5, 2024D1,050,042ResistorRichardson Electronics, Ltd.
Oct 15, 2024D1,046,802ResistorRichardson Electronics, Ltd.
Sep 19, 202311,764,002Ultracapacitor generator start moduleElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Apr 11, 202311,624,348Ultracapacitor pitch energy moduleElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Feb 22, 202211,257,652Insulator with conductive dissipative coatingElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Dec 7, 202111,193,471Ultracapacitor pitch energy moduleElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Nov 27, 20252025/0361852ULTRACAPACITOR PITCH ENERGY MODULEEngines, pumps, turbinesRichardson Electronics, Ltd.
Feb 27, 20252025/0067245ULTRACAPACITOR PITCH ENERGY MODULEEngines, pumps, turbinesRichardson Electronics, Ltd. · patent 12,410,772 granted from it
Jan 30, 20252025/0037944ULTRACAPACITOR GENERATOR START MODULEElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Nov 14, 20242024/0380236HYBRID CAPACITOR ENERGY STORAGEElectrical machinery, apparatus, energyRichardson Electronics, Ltd. · patent 12,451,720 granted from it
Apr 4, 20242024/0113548VOLTAGE DISCHARGE DEVICEElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Jan 11, 20242024/0013984ULTRACAPACITOR GENERATOR START MODULEElectrical machinery, apparatus, energyRichardson Electronics, Ltd. · patent 12,142,424 granted from it
Jul 13, 20232023/0220828ULTRACAPACITOR PITCH ENERGY MODULEEngines, pumps, turbinesRichardson Electronics, Ltd. · patent 12,173,689 granted from it
Aug 25, 20222022/0268256ULTRACAPACITOR PITCH ENERGY MODULEElectrical machinery, apparatus, energyRichardson Electronics, Ltd. · patent 11,624,348 granted from it
May 5, 20222022/0139663INSULATOR WITH CONDUCTIVE DISSIPATIVE COATINGElectrical machinery, apparatus, energyRichardson Electronics, Ltd.
Aug 12, 20212021/0249216INSULATOR WITH CONDUCTIVE DISSIPATIVE COATINGElectrical machinery, apparatus, energyRichardson Electronics, Ltd. · patent 11,257,652 granted from it
What it applied for, 2024 to 2025: Electrical machinery, apparatus, energy 4 · Engines, pumps, turbines 2.

A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.

SI Assistanton RELL · research, not advice