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For the Inventor, By the Inventor

Tokyo, Japan

Seki Company


USPTO Granted Patents = 2

Forward Citations = 42

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4 inventors (with patents filed for the assignee):

goldMedal Tsukasa Yoneyama (1 out of 5 patents)

silverMedal Takeshi Takayanagi (1 out of 4 patents)

bronzeMedal Noboru Morita (1 out of 2 patents)

4.  Chusei Seki (1 out of 1 patent)


2 patents:

1. 5139739 - Gold alloy for black coloring, processed article of black colored gold (1992-08-18),
2. 4463330 - Dielectric waveguide (1984-07-31),
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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#4,058 in Tokyo

#10,966 in Japan

...
Tokyo, Japan

Seki Company

Forward Citations = 42

4 inventors:

goldMedal Tsukasa Yoneyama (1 out of 5 patents)

silverMedal Takeshi Takayanagi (1 out of 4 patents)

bronzeMedal Noboru Morita (1 out of 2 patents)

4.  Chusei Seki (1 out of 1 patent)

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