Tokyo, Japan

Nippon Steel & Sumikin Welding Co., Ltd.


USPTO Granted Patents = 2


Trademarks = 1

Forward Citations = 1

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16 inventors (with patents filed for the assignee):

goldMedal Yasuhito Totsuka (2 out of 7 patents)

silverMedal Kiyohito Sasaki (2 out of 4 patents)

bronzeMedal Rikiya Takayama (2 out of 3 patents)

4 Masaaki Toriyabe (2 out of 2 patents)

5 Ryuichi Shimura (4 patents)

6 Hiroshi Nakazawa (17 patents)

7 Yuki Kayamori (0 patent)

8 Shushiro Nagashima (0 patent)

9 Sasaki Kiyohito (0 patent)

10 Takayama Rikiya (0 patent)

11 Totsuka Yasuhito (0 patent)

12 Kazuhiro Kojima (0 patent)

13 Tadashi Kasuya (0 patent)

14 Norichika Tsuji (0 patent)

15 Masao Kamada (0 patent)


2 patents:

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USPTO Data Jan 1 1976 - Dec 9 2025

2 Patents

#4,070 in Tokyo

#10,988 in Japan

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Tokyo, Japan
Forward Citations = 1

16 inventors:

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