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For the Inventor, By the Inventor

Tokyo, Japan

The Furukawa Electric Co., Ltd.


USPTO Granted Patents = 2,632



Trademarks = 27

Forward Citations = 18,936

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2,746 inventors (with patents filed for the assignee):

goldMedal Kazutaka Nara (64 out of 64 patents)

silverMedal Kazunori Mukasa (54 out of 54 patents)

bronzeMedal Junji Yoshida (50 out of 56 patents)

4.  Ryuichi Sugizaki (49 out of 49 patents)

5.  Kengo Mitose (48 out of 48 patents)

6.  Naoki Tsukiji (44 out of 45 patents)

7.  Takeshi Yagi (43 out of 87 patents)

8.  Yoshihiro Emori (42 out of 44 patents)

9.  Akihiko Kasukawa (42 out of 42 patents)

10.  Shu Namiki (42 out of 45 patents)

11.  Michio Ohkubo (35 out of 36 patents)

12.  Kazuhisa Kashihara (35 out of 37 patents)

13.  Sadahiro Kato (34 out of 34 patents)

14.  Norihiro Iwai (34 out of 34 patents)

15.  Junichi Hasegawa (33 out of 33 patents)


Core Competencies:
Power Converter
Optical Device
Multicore Fiber
Heat Pipe Structure
Light Emitting Apparatus
Rotary Connector Device
Optical Module
Resin Composition
Detection System
Vapor Chamber
Welding Method
Semiconductor Device

2,632 patents:

1. 12494702 - Electric power converter, method of controlling electric power converter, and computer readable recording medium (2025-12-09),
2. 12494620 - Wavelength-tunable laser device and wavelength control method (2025-12-09),
3. 12483037 - Power converter, power system, and control method of power converter (2025-11-25),
4. 12481115 - Optical device and optical component (2025-11-25),
5. 12481097 - Multicore fiber, manufacturing method for multicore fiber, multicore fiber preform, and manufacturing method for multicore fiber preform (2025-11-25),
6. 12470040 - Light emitting apparatus, light source unit, light source apparatus, and optical fiber laser (2025-11-11),
7. 12470029 - Rotary connector device (2025-11-11),
8. 12468096 - Optical device and method for manufacturing optical device (2025-11-11),
9. 12467695 - Heat pipe structure, heat sink, manufacturing method for heat pipe structure, and manufacturing method for heat sink (2025-11-11),
10. 12461362 - Optical module and optical device (2025-11-04),
11. 12456560 - Aluminum wire, aluminum stranded wire, coated electric wire, coated electric wire with crimp-style terminal, and CVT cable or CVT cable with crimp-style terminal (2025-10-28),
12. 12455412 - Multicore fiber (2025-10-28),
13. 12449613 - Optical part and semiconductor laser module (2025-10-21),
14. 12444860 - Terminal-equipped electric wire, wiring harness, and method for manufacturing terminal-equipped electric wire (2025-10-14),
15. 12441874 - Resin composition, resin-coating material, insulated wire, vehicle wire harness, and method of producing insulated wire to be used in vehicle wire harness (2025-10-14),
The Furukawa Electric Co., Ltd. is a global leader in the development, manufacture, and sale of energy infrastructure and industrial products. With over 130 years of history, Furukawa Electric has evolved into a diversified company that offers a wide range of products including optical fiber cables, electronic components, automotive parts, and construction materials. Combining technological expertise and innovation, Furukawa Electric strives to contribute to the advancement of society and sustainable development worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

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2,632 Patents

#44 in Tokyo

#92 in Japan

#349 in the World

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Tokyo, Japan

The Furukawa Electric Co., Ltd.

Forward Citations = 18,936

2,746 inventors:

goldMedal Kazutaka Nara (64 out of 64 patents)

silverMedal Kazunori Mukasa (54 out of 54 patents)

bronzeMedal Junji Yoshida (50 out of 56 patents)

4.  Ryuichi Sugizaki (49 out of 49 patents)

5.  Kengo Mitose (48 out of 48 patents)

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