% Expired Patents = 33.3

Trademarks = 1

Forward Citations = 51

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3 inventors (with patents filed for the assignee):

Masahiro Otsuka (6 out of 6 patents)

Shigeru Shoji (2 out of 3 patents)

Michizo Yamanaka (1 out of 5 patents)

6 patents: Sort by Forward Citations

1. 12053340 - Lateral branch detection device, lateral branch detection probe, lateral branch detection method, and program for same (2024-08-06),

2. 11191625 - Method of detecting the position of a lateral canal extending from a root canal to a periodontal space, and detecting an opening direction of the lateral canal, apparatus for the same, and a computer readable storage medium storing program to have a computer execute the method (2021-12-07),

3. 7909604 - Root apex position detection apparatus (2011-03-22),

4. 7147467 - Tooth mobility measuring apparatus (2006-12-12),

5. 6638063 - Optical apparatus and resin curing apparatus (2003-10-28),

6. 6059569 - Apical position detection apparatus (2000-05-09),

Company Overview

Toei Electric Co., Ltd. is a Japanese company specializing in the design, development, and manufacture of electrical equipment. With a history dating back to 1936, Toei Electric has built a reputation for providing high-quality products and services to a wide range of industries including transportation, energy, and telecommunications. Their comprehensive product lineup includes transformers, switchgear, circuit breakers, and power distribution systems. Toei Electric is committed to innovation and sustainability, continually striving to meet the evolving needs of their customers while minimizing environmental impact.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

6 Patents

#2,469 in

#5,990 in

Tokyo, Japan

Toei Electric Co., Ltd.

Forward Citations = 51

3 inventors:

Masahiro Otsuka (6 out of 6 patents)

Shigeru Shoji (2 out of 3 patents)

Michizo Yamanaka (1 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Toei Electric Co., Ltd.. Retrieved from https://idiyas.com/company/toei-electric-company

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]