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For the Inventor, By the Inventor

Okayama, Japan

Dowa Engineering Co., Ltd.


USPTO Granted Patents = 2

Forward Citations = 7

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9 inventors (with patents filed for the assignee):

goldMedal Seiichi Hisano (1 out of 11 patents)

silverMedal Kazumasa Tezuka (1 out of 4 patents)

bronzeMedal Hiroshi Nagino (1 out of 1 patent)

4.  Toshiya Ogasawara (1 out of 1 patent)

5.  Masanori Ochiishi (1 out of 1 patent)

6.  Norimasa Kubo (1 out of 1 patent)

7.  Mamoru Takeda (1 out of 1 patent)

8.  Hyoichi Sasaki (1 out of 1 patent)

9.  Ikuo Watanabe (1 out of 1 patent)


2 patents:

1. 4251497 - Method for measuring the basic amount in basic aluminum sulfate solution (1981-02-17),
2. 4147452 - Method for constructing a rectangularly shaped tunnel (1979-04-03),
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USPTO Data Jan 1 1976 - Oct 6 2026

2 Patents

#68 in Okayama

#11,124 in Japan

Okayama, JP
Okayama, Japan

Dowa Engineering Co., Ltd.

Forward Citations = 7

9 inventors:

goldMedal Seiichi Hisano (1 out of 11 patents)

silverMedal Kazumasa Tezuka (1 out of 4 patents)

bronzeMedal Hiroshi Nagino (1 out of 1 patent)

4.  Toshiya Ogasawara (1 out of 1 patent)

5.  Masanori Ochiishi (1 out of 1 patent)

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