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For the Inventor, By the Inventor

Tokyo, Japan

Nihon Doro Kodan


USPTO Granted Patents = 2

Forward Citations = 6

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7 inventors (with patents filed for the assignee):

goldMedal Toshiyuki Watanabe (2 out of 71 patents)

silverMedal Hiroshi Shima (2 out of 24 patents)

bronzeMedal Koich Matsumoto (2 out of 2 patents)

4.  Toshikazu Osafune (2 out of 2 patents)

5.  Minoru Yamamoto (1 out of 20 patents)

6.  Kunio Nakasaki (1 out of 1 patent)

7.  Teruo Nakazawa (1 out of 1 patent)


2 patents:

1. 6019189 - Noise barrier wall (2000-02-01),
2. 5971096 - Noise barrier and method of installing same (1999-10-26),
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USPTO Data Jan 1 1976 - Dec 23 2025

2 Patents

#4,063 in Tokyo

#10,965 in Japan

...
Tokyo, Japan

Nihon Doro Kodan

Forward Citations = 6

7 inventors:

goldMedal Toshiyuki Watanabe (2 out of 71 patents)

silverMedal Hiroshi Shima (2 out of 24 patents)

bronzeMedal Koich Matsumoto (2 out of 2 patents)

4.  Toshikazu Osafune (2 out of 2 patents)

5.  Minoru Yamamoto (1 out of 20 patents)

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