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For the Inventor, By the Inventor

Tokyo, Japan

Karonite Chemical Co., Ltd.


USPTO Granted Patents = 3

Forward Citations = 30

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13 inventors (with patents filed for the assignee):

goldMedal Takayuki Ikenaga (1 out of 9 patents)

silverMedal Morikuni Nakazato (1 out of 6 patents)

bronzeMedal Takaharu Nakano (1 out of 17 patents)

4.  Akihiro Mochizuki (1 out of 2 patents)

5.  Naoyuki Sakamoto (1 out of 6 patents)

6.  Michio Shiga (1 out of 1 patent)

7.  Kimitoshi Hirano (1 out of 1 patent)

8.  Matsuo Matsushita (1 out of 1 patent)

9.  Tatsuro Tsuneno (1 out of 2 patents)

10.  Koji Kishimoto (1 out of 2 patents)

11.  Shigemi Hayashi (1 out of 1 patent)

12.  Yoshihide Watanabe (1 out of 1 patent)

13.  Hirokazu Kawashimo (1 out of 1 patent)


3 patents:

1. 4746328 - Stabilized fuel oil containing a dispersant (1988-05-24),
2. 4530771 - Lubricating oil compositions (1985-07-23),
3. 4057504 - Method of preparing overbased lubricating oil additives (1977-11-08),
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USPTO Data Jan 1 1976 - Dec 9 2025

3 Patents

#3,271 in Tokyo

#8,780 in Japan

...
Tokyo, Japan

Karonite Chemical Co., Ltd.

Forward Citations = 30

13 inventors:

goldMedal Takayuki Ikenaga (1 out of 9 patents)

silverMedal Morikuni Nakazato (1 out of 6 patents)

bronzeMedal Takaharu Nakano (1 out of 17 patents)

4.  Akihiro Mochizuki (1 out of 2 patents)

5.  Naoyuki Sakamoto (1 out of 6 patents)

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