Growing community of inventors

Saitama, Japan

Osamu Nakajima

Average Co-Inventor Count = 1.95

ph-index = 4

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 32

Osamu NakajimaTakashi Kudo (2 patents)Osamu NakajimaAtsushi Takeuchi (1 patent)Osamu NakajimaTakashi Miura (1 patent)Osamu NakajimaHiromichi Aoki (1 patent)Osamu NakajimaAkihiro Hikichi (1 patent)Osamu NakajimaYuhei Kishimura (1 patent)Osamu NakajimaTomoyoshi Akiyama (1 patent)Osamu NakajimaOsamu Nakajima (6 patents)Takashi KudoTakashi Kudo (6 patents)Atsushi TakeuchiAtsushi Takeuchi (11 patents)Takashi MiuraTakashi Miura (5 patents)Hiromichi AokiHiromichi Aoki (3 patents)Akihiro HikichiAkihiro Hikichi (3 patents)Yuhei KishimuraYuhei Kishimura (3 patents)Tomoyoshi AkiyamaTomoyoshi Akiyama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Akebono Brake Industry Co., Ltd. (4 from 507 patents)

2. Other (2 from 832,912 patents)

3. Taco Co., Ltd. (1 from 2 patents)

4. Sysmic Co., Ltd. (1 from 1 patent)


6 patents:

1. 6632857 - Friction material

2. 6274243 - Automobile exterior components

3. 6107386 - Friction materials

4. 5817411 - Friction material

5. 5576369 - Friction material

6. 4993010 - Laser disk cassette selecting system

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as of
1/8/2026
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