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Sumitomo Wiring System, Ltd.

USPTO Granted Patents = 33

% Expired Patents = 18.2

Forward Citations = 367

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82 inventors (with patents filed for the assignee):

Yoshiaki Yamano (2 out of 25 patents)

Hajime Kawase (2 out of 106 patents)

Hiroyuki Matsuoka (2 out of 53 patents)

4. Masamitsu Chishima (2 out of 51 patents)

5. Kouji Nemoto (2 out of 8 patents)

6. Mitsuhiro Fujitani (2 out of 24 patents)

7. Nori Inoue (2 out of 50 patents)

8. Michio Fukuda (2 out of 15 patents)

9. Masaki Koshi (2 out of 4 patents)

10. Kazuo Iura (2 out of 9 patents)

11. Kazuhito Saka (2 out of 10 patents)

12. Shouji Yamada (2 out of 2 patents)

13. Akihiko Watanabe (2 out of 4 patents)

14. Hiroki Yamada (1 out of 11 patents)

15. Ryota Mori (1 out of 15 patents)

Core Competencies:

Electrical Connector

Wiring Module

Junction Box

Power Module

Connector Inspection

Shielded Cable

Automatic Connecting

Wire Harness

Water-Proof Connector

Multi-Way Connector

Fuse Technology

Terminal Fitting

33 patents: Sort by Forward Citations

1. 11276956 - Connector with a primary molding having a protrusion, a secondary molding engaging the protrusion and a sealing groove in the secondary molding aligned with the protrusion (2022-03-15),

2. 10790494 - Battery wiring module including a terminal accommodation portion (2020-09-29),

3. 8608515 - Device connector (2013-12-17),

4. 7944681 - Electrical junction box (2011-05-17),

5. 7384281 - Ground terminal for shielded cables and method of assembling it (2008-06-10),

6. 7053304 - Door harness installation device (2006-05-30),

7. 7035105 - Power module and method for producing the same (2006-04-25),

8. 6904670 - Frame jig for a connector (2005-06-14),

9. 6731118 - Connector inspection apparatus (2004-05-04),

10. 6488516 - Lever-type connector (2002-12-03),

11. 6382612 - Transport carrier (2002-05-07),

12. 6017235 - Bulb socket (2000-01-25),

13. 5989079 - Male side terminal fitting (1999-11-23),

14. 5936317 - Power supply device for vehicle (1999-08-10),

15. 5850684 - Cable-end-portion bend forming device for automatic connecting apparatus (1998-12-22),

Company Overview

Sumitomo Wiring System, Ltd. is a prominent player in the automotive and industrial wiring harness sector, specializing in the design and manufacture of advanced wiring solutions. The company focuses on developing high-quality electrical components that enhance vehicle performance and safety. With a commitment to innovation, Sumitomo Wiring System engages in research and development across various technologies, including connectivity and power distribution, serving clients primarily in the automotive industry and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

33 Patents

#5 in Mie

#2,201 in Japan

#20,147 in the World

Sumitomo Wiring System, Ltd.

Forward Citations = 367

82 inventors:

Yoshiaki Yamano (2 out of 25 patents)

Hajime Kawase (2 out of 106 patents)

Hiroyuki Matsuoka (2 out of 53 patents)

4. Masamitsu Chishima (2 out of 51 patents)

5. Kouji Nemoto (2 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sumitomo Wiring System, Ltd.. Retrieved from https://idiyas.com/company/sumitomo-wiring-system

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]

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