% Expired Patents = 100.0

Forward Citations = 12

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3 inventors (with patents filed for the assignee):

Masayuki Kato (1 out of 42 patents)

Yoshio Mizutani (1 out of 10 patents)

Seiji Takahashi (1 out of 38 patents)

2 patents: Sort by Forward Citations

1. 7848071 - Power supply controller (2010-12-07),

2. 6932657 - Connector having terminal fitting covered with outer covering (2005-08-23),

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USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#1,147 in Osaka

#11,133 in Japan

Osaka, Japan

Sumitomo Electric Systems, Ltd.

Forward Citations = 12

3 inventors:

Masayuki Kato (1 out of 42 patents)

Yoshio Mizutani (1 out of 10 patents)

Seiji Takahashi (1 out of 38 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Electric Systems, Ltd.. Retrieved from https://idiyas.com/company/sumitomo-electric-systems

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]