EPO Patents = 6

Forward Citations = 1

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36 inventors (with patents filed for the assignee):

Kazuyoshi Ooki (5 out of 20 patents)

Shinsuke Kurino (4 out of 11 patents)

Takahiro Suwa (4 out of 4 patents)

4. Masahiro Shibata (3 out of 86 patents)

5. Kazufumi Joko (3 out of 15 patents)

6. Hiroki Akiyama (3 out of 6 patents)

7. Tetsu Morishima (2 out of 20 patents)

8. Takahiro Suzuki (2 out of 15 patents)

9. Yuki Arao (2 out of 7 patents)

10. Yoshinobu Toda (2 out of 6 patents)

11. Tomoyoshi Sasaki (2 out of 6 patents)

12. Ryosuke Meo (1 out of 11 patents)

13. Ryuichiro Sato (1 out of 37 patents)

14. Hirotaka Sakuma (1 out of 26 patents)

15. Takemi Hasegawa (1 out of 54 patents)

17 patents: Sort by Forward Citations

1. 12724201 - Fusion splicer (2026-09-01),

2. D1142271 - FUSION SPLICER WORKING TRAY (2026-08-18),

3. D1141902 - PACKAGING CONTAINER (2026-08-18),

4. 12695266 - Optical amplification transmission line (2026-07-28),

5. 12678987 - Optical fiber cutting device (2026-07-14),

6. 12669655 - Optical connector (2026-06-30),

7. 12650561 - Optical connector (2026-06-09),

8. 12645030 - Optical fiber fusion splicer and method for fusion splicing optical fiber (2026-06-02),

9. 12631825 - Optical fiber cutter (2026-05-19),

10. 12613380 - Optical connector (2026-04-28),

11. 12613375 - Coating removal tool (2026-04-28),

12. 12607805 - Fusion splicing system for optical fibers, fusion splicer, model creation device, and method for fusion splicing optical fibers (2026-04-21),

13. 12586429 - Fusion splicing system, operation control method for fusion splicer, and server (2026-03-24),

14. 12578533 - Fusion splicing device and core position specification method (2026-03-17),

15. D1117063 - Optical fiber connector (2026-03-10),

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

17 Patents

#57 in Yokohama

#3,222 in Japan

#35,837 in the World

Yokohama, Japan

Sumitomo Electric Optifrontier Co., Ltd.