Growing community of inventors

Tokyo, Japan

Kazuo Hirano

Average Co-Inventor Count = 2.06

ph-index = 8

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 = 416

Kazuo HiranoEiji Shinohara (6 patents)Kazuo HiranoTaiji Kambayashi (6 patents)Kazuo HiranoToshitake Nagai (6 patents)Kazuo HiranoTakashi Higashimoto (5 patents)Kazuo HiranoYuichiro Miura (5 patents)Kazuo HiranoTakayuki Nate (5 patents)Kazuo HiranoMasahisa Ohtsuka (5 patents)Kazuo HiranoNobuyuki Yamaguchi (3 patents)Kazuo HiranoKyoichi Kaneko (1 patent)Kazuo HiranoAkira Yamaguchi (1 patent)Kazuo HiranoMasaji Saito (1 patent)Kazuo HiranoKohei Kubota (1 patent)Kazuo HiranoMasayuki Uehara (1 patent)Kazuo HiranoMasagi Saito (1 patent)Kazuo HiranoKoiti Nagata (1 patent)Kazuo HiranoYasumasa Sugiyama (1 patent)Kazuo HiranoHaruhiko Tanaka (1 patent)Kazuo HiranoKazuo Hirano (23 patents)Eiji ShinoharaEiji Shinohara (41 patents)Taiji KambayashiTaiji Kambayashi (12 patents)Toshitake NagaiToshitake Nagai (10 patents)Takashi HigashimotoTakashi Higashimoto (8 patents)Yuichiro MiuraYuichiro Miura (5 patents)Takayuki NateTakayuki Nate (5 patents)Masahisa OhtsukaMasahisa Ohtsuka (5 patents)Nobuyuki YamaguchiNobuyuki Yamaguchi (49 patents)Kyoichi KanekoKyoichi Kaneko (65 patents)Akira YamaguchiAkira Yamaguchi (56 patents)Masaji SaitoMasaji Saito (6 patents)Kohei KubotaKohei Kubota (4 patents)Masayuki UeharaMasayuki Uehara (3 patents)Masagi SaitoMasagi Saito (2 patents)Koiti NagataKoiti Nagata (1 patent)Yasumasa SugiyamaYasumasa Sugiyama (1 patent)Haruhiko TanakaHaruhiko Tanaka (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Daiwa Seiko, Inc. (16 from 602 patents)

2. Sanyo Electric Co., Ltd. (6 from 8,782 patents)

3. Tonen Corporation (6 from 141 patents)

4. Tonen Chemical Corporation (6 from 47 patents)

5. Osaka Organic Chemical Industry Co., Ltd. (6 from 9 patents)

6. Miura Dolphins Co., Ltd. (6 from 6 patents)

7. Other (2 from 832,912 patents)

8. Maruman-Optical Kabushiki Kaisha (1 from 1 patent)

9. Ohtsuka; Masahisa (1 from 1 patent)

10. Ohtsuka, Masahisa, Ohizumimachi (1 from 1 patent)

11. Masahisa Ohtsuka (1 from 1 patent)


23 patents:

1. 6247810 - Hinge for eyeglasses

2. 6113018 - Reversal preventive device

3. 5918825 - Reversal preventive device

4. 5865387 - Fishing reel brake device providing adjustable brake force through

5. 5813620 - Spinning reel for fishing comprising rotational balancing weights

6. 5678781 - Reversal preventive device

7. 5662286 - Reversal preventive device

8. 5632152 - Artificial snow in an aggregate form of snow granules

9. 5570851 - Reverse rotation preventing mechanism in spinning reel for fishing

10. 5556671 - Artificial snow in an aggregate form of snow granules

11. 5538198 - Handle for fishing reel

12. 5503343 - Reverse rotation preventive device for fishing reel

13. 5494232 - Reversal preventive device

14. 5443570 - Handle folding device for fishing reel

15. 5436039 - Artificial snow in an aggregate form of snow granules

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as of
1/8/2026
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