For the Inventor, By the Inventor

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Hitachi Construction Co., Ltd.

USPTO Granted Patents = 2

Forward Citations = 38

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7 inventors (with patents filed for the assignee):

Takashi Abe (1 out of 2 patents)

Toichi Hirata (1 out of 91 patents)

Osamu Tomikawa (1 out of 10 patents)

4. Satoshi Nozaki (1 out of 1 patent)

5. Osamu Arai (1 out of 1 patent)

6. Kazuhiro Arai (1 out of 1 patent)

7. Kazuhiro Sunamura (1 out of 4 patents)

2 patents: Sort by Forward Citations

1. 7032692 - Drilling device for earth drill (2006-04-25),

2. 5048296 - Anti-vibration apparatus in a hydraulic system for boom cylinder of (1991-09-17),

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USPTO Data Jan 1 1976 - Jan 6 2026

2 Patents

#4,058 in Tokyo

#10,966 in Japan

Hitachi Construction Co., Ltd.

Forward Citations = 38

7 inventors:

Takashi Abe (1 out of 2 patents)

Toichi Hirata (1 out of 91 patents)

Osamu Tomikawa (1 out of 10 patents)

4. Satoshi Nozaki (1 out of 1 patent)

5. Osamu Arai (1 out of 1 patent)

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