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For the Inventor, By the Inventor

Tokyo, Japan

Sumihatsu Co., Ltd.


USPTO Granted Patents = 1


Forward Citations = 1

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7 inventors (with patents filed for the assignee):

goldMedal Minoru Honjo (1 out of 15 patents)

silverMedal Akira Tange (1 out of 141 patents)

bronzeMedal Kiyoshi Uwai (1 out of 9 patents)

4.  Shigeru Endo (1 out of 32 patents)

5.  Katsutoshi Yamashita (1 out of 1 patent)

6.  Koei Tsuru (1 out of 1 patent)

7.  Keiichi Fujie (1 out of 1 patent)


1 patent:

1. 10041160 - Steel for spring, and method for producing spring (2018-08-07),
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USPTO Data Jan 1 1976 - Dec 23 2025

1 Patents

#5,735 in Tokyo

#15,539 in Japan

...
Tokyo, Japan

Sumihatsu Co., Ltd.

Forward Citations = 1

7 inventors:

goldMedal Minoru Honjo (1 out of 15 patents)

silverMedal Akira Tange (1 out of 141 patents)

bronzeMedal Kiyoshi Uwai (1 out of 9 patents)

4.  Shigeru Endo (1 out of 32 patents)

5.  Katsutoshi Yamashita (1 out of 1 patent)

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