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Sumitomo Electric Industries, Limited

USPTO Granted Patents = 10,240

CIPO Patents = 85

EPO Patents = 1,120

Trademarks = 133

Forward Citations = 72,284

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5,058 inventors (with patents filed for the assignee):

Hiroki Hirai (167 out of 187 patents)

Takeyoshi Masuda (115 out of 115 patents)

Naoji Fujimori (113 out of 113 patents)

4. Masaki Ueno (110 out of 111 patents)

5. Hideo Itozaki (109 out of 110 patents)

6. Eisuke Sasaoka (106 out of 109 patents)

7. Takao Nakamura (104 out of 135 patents)

8. Hideaki Nakahata (103 out of 106 patents)

9. Shuji Yazu (96 out of 96 patents)

10. Yoshiki Kuhara (95 out of 99 patents)

11. Seiji Nakahata (94 out of 94 patents)

12. Akira Yamakawa (94 out of 95 patents)

13. Yasuo Omori (91 out of 95 patents)

14. Hiromi Nakanishi (90 out of 94 patents)

15. Katsushi Akita (90 out of 90 patents)

Core Competencies:

Optical Fiber

Cutting Tool

Transistor

Carbon Nanotube-Resin Composite

Vehicle Communication System

Vertical Cavity Surface Emitting Laser

Electrical Connection Box

Inverter

Amplifier Circuit

Shield Connector

Wiring Module

Detection Device

10,240 patents: Sort by Forward Citations

1. 12494553 - Wiring module (2025-12-09),

2. 12490383 - Circuit assembly (2025-12-02),

3. 12490375 - Printed wiring board (2025-12-02),

4. 12489814 - Management device, vehicle communication system, vehicle, vehicle communication management method, and vehicle communication management program (2025-12-02),

5. 12488101 - Detection device, detection method and detection program (2025-12-02),

6. 12487397 - Optical fiber (2025-12-02),

7. 12485649 - Electromagnetic shielding conductive sheet with metallic plate (2025-12-02),

8. D1103231 - Cutting tool (2025-11-25),

9. D1103230 - Cutting tool (2025-11-25),

10. 12484286 - Transistor and semiconductor device (2025-11-25),

11. 12484201 - Electric device with immersed electronic components and elongated busbar forming an upward flow (2025-11-25),

12. 12482978 - Connector (2025-11-25),

13. 12482963 - Press-fit terminal and connector device (2025-11-25),

14. 12481106 - Optical-fiber bundle structure, optical connection structure, and method of manufacturing optical-fiber bundle structure (2025-11-25),

15. 12480230 - Carbon nanotube-resin composite and method for manufacturing carbon nanotube-resin composite (2025-11-25),

Sumitomo Electric Industries, Limited is a diversified company engaged in the manufacture and sale of electrical wires, cables, and related products. It operates through various segments, including Automotive, Infocommunications, Electronics, Energy, Industrial Materials & Solutions, and Others. The company offers a wide range of products, including optical fibers, electric power cables, materials for semiconductor and display production, and rechargeable batteries. Sumitomo Electric Industries aims to contribute to society through the creation of new values and continues to develop innovative technologies.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

10,240 Patents

#5 in Osaka

#26 in Japan

#79 in the World

Sumitomo Electric Industries, Limited

Forward Citations = 72,284

5,058 inventors:

Hiroki Hirai (167 out of 187 patents)

Takeyoshi Masuda (115 out of 115 patents)

Naoji Fujimori (113 out of 113 patents)

4. Masaki Ueno (110 out of 111 patents)

5. Hideo Itozaki (109 out of 110 patents)

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