% Expired Patents = 28.6

Trademarks = 3

Forward Citations = 64

Loading Chart...

8 inventors (with patents filed for the assignee):

Kan Sano (2 out of 13 patents)

Shinichi Sakamoto (1 out of 24 patents)

Douglas James Malcolm (1 out of 9 patents)

4. Mitsugu Kawarai (1 out of 29 patents)

5. Hiroyuki Miyazaki (1 out of 63 patents)

6. Takeshi Hatakeyama (1 out of 7 patents)

7. Yoshito Watanabe (1 out of 5 patents)

8. Tadayuki Fushimi (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 11657962 - Method for manufacturing electronic component with coil (2023-05-23),

2. 7515443 - Inverter circuit (2009-04-07),

3. 7397336 - Coil component (2008-07-08),

4. 7259650 - Magnetic element (2007-08-21),

5. 7042324 - Surface mount inductor (2006-05-09),

6. 6950002 - Inductance element (2005-09-27),

7. D434723 - Transformer (2000-12-05),

Company Overview

Sumida Electric Co., Ltd. is a global manufacturer of electronic components, modules, and systems. With over 65 years of experience, Sumida offers a wide range of products including inductors, transformers, coils, and power supplies. Their innovative solutions are used in a variety of industries such as automotive, consumer electronics, and telecommunications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#2,287 in Tokyo

#5,456 in Japan

Tokyo, Japan

Sumida Electric Co., Ltd.

Forward Citations = 64

8 inventors:

Kan Sano (2 out of 13 patents)

Shinichi Sakamoto (1 out of 24 patents)

Douglas James Malcolm (1 out of 9 patents)

4. Mitsugu Kawarai (1 out of 29 patents)

5. Hiroyuki Miyazaki (1 out of 63 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumida Electric Co., Ltd.. Retrieved from https://idiyas.com/company/sumida-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]