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For the Inventor, By the Inventor

Saitama, Japan

Optohub Co., Ltd


USPTO Granted Patents = 4

Forward Citations = 77

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9 inventors (with patents filed for the assignee):

goldMedal Ikuo Kurachi (2 out of 15 patents)

silverMedal Hiroshi Takano (2 out of 13 patents)

bronzeMedal Katsushi Oota (2 out of 2 patents)

4.  Haruo Shibuya (2 out of 2 patents)

5.  Shunji Sakai (2 out of 2 patents)

6.  Yasumasa Kashima (2 out of 13 patents)

7.  Yasuhiko Muramatsu (1 out of 12 patents)

8.  Keisuke Asami (1 out of 1 patent)

9.  Yasuaki Tamura (1 out of 1 patent)


4 patents:

1. 12396275 - Photo detection device (2025-08-19),
2. 12154917 - Semiconductor image sensor (2024-11-26),
3. 7889331 - Bidirectional optical module and optical time domain reflectometer equipped with the bidirectional optical module (2011-02-15),
4. 7853104 - Bidirectional optical module and optical time domain reflectometer (2010-12-14),
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USPTO Data Jan 1 1976 - Sep 29 2026

4 Patents

#124 in Saitama 343-0827

#7,569 in Japan

Saitama, JP
Saitama, Japan

Optohub Co., Ltd

Forward Citations = 77

9 inventors:

goldMedal Ikuo Kurachi (2 out of 15 patents)

silverMedal Hiroshi Takano (2 out of 13 patents)

bronzeMedal Katsushi Oota (2 out of 2 patents)

4.  Haruo Shibuya (2 out of 2 patents)

5.  Shunji Sakai (2 out of 2 patents)

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