For the Inventor, By the Inventor

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Kobelco & Materials Copper Tube, Ltd.

USPTO Granted Patents = 2

EPO Patents = 2

Forward Citations = 1

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6 inventors (with patents filed for the assignee):

Masato Watanabe (2 out of 17 patents)

Takashi Shirai (2 out of 10 patents)

Yasuhiro Aruga (1 out of 22 patents)

4. Toshiaki Takagi (1 out of 5 patents)

5. Mamoru Nagao (1 out of 15 patents)

6. Akihiko Ishibashi (1 out of 1 patent)

7. Tsuneo Haba (1 patent)

8. Hiroyuki Takahashi (0 patent)

9. Akihiko Ishibashi (0 patent)

2 patents: Sort by Forward Citations

1. 9671182 - Copper alloy tube for heat exchanger excellent in fracture strength (2017-06-06),

2. 8562764 - Copper alloy tube for heat exchangers (2013-10-22),

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USPTO Data Jan 1 1976 - Dec 30 2025

2 Patents

#4,058 in Tokyo

#10,964 in Japan

Kobelco & Materials Copper Tube, Ltd.

Forward Citations = 1

6 inventors:

Masato Watanabe (2 out of 17 patents)

Takashi Shirai (2 out of 10 patents)

Yasuhiro Aruga (1 out of 22 patents)

4. Toshiaki Takagi (1 out of 5 patents)

5. Mamoru Nagao (1 out of 15 patents)

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