Growing community of inventors

Yokoyama, Japan

Hirotoshi Doki

Average Co-Inventor Count = 6.00

ph-index = 3

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 = 18

Hirotoshi DokiTsugio Matsubara (3 patents)Hirotoshi DokiToshiki Oyanagi (3 patents)Hirotoshi DokiShigeo Watanabe (2 patents)Hirotoshi DokiHitoshi Ishigaki (2 patents)Hirotoshi DokiHiroshi Itoh (1 patent)Hirotoshi DokiKenichi Nakamura (1 patent)Hirotoshi DokiKenji Tsuboi (1 patent)Hirotoshi DokiKenzo Seita (1 patent)Hirotoshi DokiTakashi Yodoya (1 patent)Hirotoshi DokiShinya Yamagami (1 patent)Hirotoshi DokiSusumu Oyama (1 patent)Hirotoshi DokiHirotoshi Doki (3 patents)Tsugio MatsubaraTsugio Matsubara (6 patents)Toshiki OyanagiToshiki Oyanagi (6 patents)Shigeo WatanabeShigeo Watanabe (2 patents)Hitoshi IshigakiHitoshi Ishigaki (2 patents)Hiroshi ItohHiroshi Itoh (98 patents)Kenichi NakamuraKenichi Nakamura (9 patents)Kenji TsuboiKenji Tsuboi (5 patents)Kenzo SeitaKenzo Seita (3 patents)Takashi YodoyaTakashi Yodoya (1 patent)Shinya YamagamiShinya Yamagami (1 patent)Susumu OyamaSusumu Oyama (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsui Chemicals, Inc. (2 from 1,788 patents)

2. Mitsui Toatsu Chemicals, Incorporated (1 from 1,379 patents)


3 patents:

1. 6255400 - Polymer and applications thereof

2. 5942573 - Acrylamide polymers and use thereof

3. 5627249 - Acrylamide polymers and use thereof

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as of
1/13/2026
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