Trademarks = 2

Forward Citations = 170

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4 inventors (with patents filed for the assignee):

Masamichi Kuramoto (11 out of 15 patents)

Takeo Kuramoto (7 out of 13 patents)

Takashi Seike (1 out of 1 patent)

4. Tomosuke Itoh (1 out of 1 patent)

19 patents: Sort by Forward Citations

1. D545704 - Volt-ohm-ammeter (2007-07-03),

2. D490331 - Volt-ammeter (2004-05-26),

3. 6586923 - Non-contact type current measuring instrument (2003-07-01),

4. D476246 - Volt-ohm-ammeter (2003-06-25),

5. D462021 - Electricity measuring instrument (2002-08-28),

6. D446734 - Volt-ohm-ammeter (2001-08-22),

7. D440892 - Volt-ohm-ammeter (2001-04-25),

8. D422229 - Volt-ohm-ammeter (2000-04-04),

9. D401172 - Ammeter (1998-11-17),

10. D358349 - Volt-ohm-ammeter (1995-05-16),

11. D335095 - Voltammeter (1993-04-27),

12. D312420 - Volt-ohm-ammeter or the like (1990-11-27),

13. D271948 - Ampere-volt-wattmeter or the like (1983-12-27),

14. D264448 - Portable volt-ohm-ammeter or the like (1982-05-18),

15. D264057 - Volt-ohm-ammeter or the like (1982-04-27),

Company Overview

Kyoritsu Electrical Instruments Works, Ltd. is a prominent Japanese company specializing in the development and manufacturing of electrical measuring instruments. The organization focuses on a diverse range of products, including multimeters, insulation testers, and earth resistance testers, catering to various industries such as construction, electrical engineering, and telecommunications. With a commitment to innovation, Kyoritsu plays a significant role in advancing measurement technology, ensuring safety and accuracy in electrical applications across Japan and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

19 Patents

#1,381 in Tokyo

#3,041 in Japan

#32,693 in the World

Tokyo, Japan

Kyoritsu Electrical Instruments Works, Ltd.

Forward Citations = 170

4 inventors:

Masamichi Kuramoto (11 out of 15 patents)

Takeo Kuramoto (7 out of 13 patents)

Takashi Seike (1 out of 1 patent)

4. Tomosuke Itoh (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kyoritsu Electrical Instruments Works, Ltd.. Retrieved from https://idiyas.com/company/kyoritsu-electrical-instruments-works

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]