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For the Inventor, By the Inventor

Nagano, Japan

Tk Co., Ltd.


USPTO Granted Patents = 4

% Expired Patents = 25.0


Forward Citations = 32

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9 inventors (with patents filed for the assignee):

goldMedal Akira Nozue (2 out of 3 patents)

silverMedal Kazuyoshi Harada (2 out of 2 patents)

bronzeMedal Koji Harada (1 out of 1 patent)

4.  Kiyoshi Takemura (1 out of 1 patent)

5.  Takuya Saito (1 out of 6 patents)

6.  Osamu Kimpara (1 out of 2 patents)

7.  Toshihiko Kondo (1 out of 1 patent)

8.  Masayuki Mizutani (1 out of 1 patent)

9.  Kenji Komiya (1 out of 1 patent)


4 patents:

1. 9943926 - Press-fit joining apparatus (2018-04-17),
2. 8519672 - Desulfation device and desulfation method (2013-08-27),
3. 7385156 - Press-fit joint structure (2008-06-10),
4. 4377916 - Chain-like toy of triangular hollow prisms (1983-03-29),
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USPTO Data Jan 1 1976 - Sep 22 2026

4 Patents

#104 in Nagano

#7,568 in Japan

Nagano, JP
Nagano, Japan

Tk Co., Ltd.

Forward Citations = 32

9 inventors:

goldMedal Akira Nozue (2 out of 3 patents)

silverMedal Kazuyoshi Harada (2 out of 2 patents)

bronzeMedal Koji Harada (1 out of 1 patent)

4.  Kiyoshi Takemura (1 out of 1 patent)

5.  Takuya Saito (1 out of 6 patents)

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