Growing community of inventors

Tokyo, Japan

Tomohito Koshika

Average Co-Inventor Count = 5.32

ph-index = 6

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 = 124

Tomohito KoshikaHiroyuki Fujinuma (10 patents)Tomohito KoshikaKazuhiro Okada (10 patents)Tomohito KoshikaMasahiko Ogawa (9 patents)Tomohito KoshikaTakashi Matsuo (9 patents)Tomohito KoshikaTakeshi Iizaki (4 patents)Tomohito KoshikaHiromi Saimiya (4 patents)Tomohito KoshikaHajime Miyabe (2 patents)Tomohito KoshikaHajime Hirota (1 patent)Tomohito KoshikaToshio Nozaki (1 patent)Tomohito KoshikaMakoto Iijima (1 patent)Tomohito KoshikaHidekazu Ogino (1 patent)Tomohito KoshikaMitsuhiko Yamamoto (1 patent)Tomohito KoshikaNaoko Moriya (1 patent)Tomohito KoshikaManabu Yanagiya (1 patent)Tomohito KoshikaYoshimichi Saita (1 patent)Tomohito KoshikaTaichi Watanabe (1 patent)Tomohito KoshikaKazuhiro Okada (1 patent)Tomohito KoshikaMitsuhiko Yamamoto (1 patent)Tomohito KoshikaTomohito Koshika (12 patents)Hiroyuki FujinumaHiroyuki Fujinuma (18 patents)Kazuhiro OkadaKazuhiro Okada (11 patents)Masahiko OgawaMasahiko Ogawa (69 patents)Takashi MatsuoTakashi Matsuo (62 patents)Takeshi IizakiTakeshi Iizaki (15 patents)Hiromi SaimiyaHiromi Saimiya (7 patents)Hajime MiyabeHajime Miyabe (30 patents)Hajime HirotaHajime Hirota (23 patents)Toshio NozakiToshio Nozaki (16 patents)Makoto IijimaMakoto Iijima (7 patents)Hidekazu OginoHidekazu Ogino (7 patents)Mitsuhiko YamamotoMitsuhiko Yamamoto (4 patents)Naoko MoriyaNaoko Moriya (1 patent)Manabu YanagiyaManabu Yanagiya (1 patent)Yoshimichi SaitaYoshimichi Saita (1 patent)Taichi WatanabeTaichi Watanabe (1 patent)Kazuhiro OkadaKazuhiro Okada (1 patent)Mitsuhiko YamamotoMitsuhiko Yamamoto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kao Corporation (12 from 3,602 patents)


12 patents:

1. 10226649 - Hair dyeing or bleaching method

2. 8529638 - Head hair dyeing composition

3. 8394151 - Head hair dyeing method

4. 8277784 - Hair cosmetic product

5. 8246936 - Hair cosmetic product

6. 8158112 - Hair cosmetic product

7. 8153108 - Hair cosmetic product

8. 8152858 - Head hair dyeing method

9. 8025702 - Two-part hairdye composition

10. 7955400 - Two-part hair dye composition

11. 6719565 - Hair color advice system

12. 5009813 - Composition for hair treatment agent

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as of
12/28/2025
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