Growing community of inventors

Tokyo, Japan

Kazutaka Yamamoto

Average Co-Inventor Count = 3.69

ph-index = 1

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 = 2

Kazutaka YamamotoMasamichi Yamada (3 patents)Kazutaka YamamotoYoshihiko Hotta (106 patents)Kazutaka YamamotoTomohiro Yamashita (86 patents)Kazutaka YamamotoTomomi Ishimi (47 patents)Kazutaka YamamotoShinya Kawahara (39 patents)Kazutaka YamamotoYuki Ogawa (28 patents)Kazutaka YamamotoToshiaki Asai (20 patents)Kazutaka YamamotoKatsuya Ohi (6 patents)Kazutaka YamamotoChiyo Sakenaga (3 patents)Kazutaka YamamotoKeiichiro Arai (3 patents)Kazutaka YamamotoYohsuke Tanaka (2 patents)Kazutaka YamamotoMasatake Taguchi (1 patent)Kazutaka YamamotoKaoru Ichihashi (1 patent)Kazutaka YamamotoKazutaka Yamamoto (4 patents)Masamichi YamadaMasamichi Yamada (119 patents)Yoshihiko HottaYoshihiko Hotta (106 patents)Tomohiro YamashitaTomohiro Yamashita (86 patents)Tomomi IshimiTomomi Ishimi (47 patents)Shinya KawaharaShinya Kawahara (39 patents)Yuki OgawaYuki Ogawa (28 patents)Toshiaki AsaiToshiaki Asai (20 patents)Katsuya OhiKatsuya Ohi (6 patents)Chiyo SakenagaChiyo Sakenaga (3 patents)Keiichiro AraiKeiichiro Arai (3 patents)Yohsuke TanakaYohsuke Tanaka (2 patents)Masatake TaguchiMasatake Taguchi (1 patent)Kaoru IchihashiKaoru Ichihashi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seikagaku Corporation (3 from 191 patents)

2. Asahi Breweries, Ltd. (1 from 54 patents)

3. Ricoh Company, Ltd. (28,584 patents)


4 patents:

1. 11779593 - Agent for improving ocular subjective symptoms and method thereof

2. 11185558 - Agent for improving ocular subjective symptoms and method thereof

3. 11147831 - Agent for improving ocular subjective symptoms and method thereof

4. 7278452 - Filler for filling drink liquid

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as of
1/7/2026
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