For the Inventor, By the Inventor

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Tnk Sanwa Precision Co., Ltd.

USPTO Granted Patents = 2

Forward Citations = 16

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8 inventors (with patents filed for the assignee):

Takehiro Hayashi (1 out of 30 patents)

Jun Nakatsuka (1 out of 6 patents)

Kazunori Kuramochi (1 out of 1 patent)

4. Shinji Nagasawa (1 out of 28 patents)

5. Hidehiko Sumitomo (1 out of 9 patents)

6. Jiro Tominaga (1 out of 4 patents)

7. Yoshiaki Kanai (1 out of 1 patent)

8. Takanori Nakazawa (1 out of 2 patents)

2 patents: Sort by Forward Citations

1. 7391951 - Optical fiber cleaver (2008-06-24),

2. 4851059 - Non-magnetic high hardness austenitic stainless steel (1989-07-25),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#4,058 in Tokyo

#10,964 in Japan

Tnk Sanwa Precision Co., Ltd.

Forward Citations = 16

8 inventors:

Takehiro Hayashi (1 out of 30 patents)

Jun Nakatsuka (1 out of 6 patents)

Kazunori Kuramochi (1 out of 1 patent)

4. Shinji Nagasawa (1 out of 28 patents)

5. Hidehiko Sumitomo (1 out of 9 patents)

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