Growing community of inventors

Shizuoka, Japan

Hiroyasu Ohsawa

Average Co-Inventor Count = 2.86

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 = 49

Hiroyasu OhsawaHiroshi Morikawa (3 patents)Hiroyasu OhsawaMasatoshi Murakoshi (3 patents)Hiroyasu OhsawaTakashi Sakagami (2 patents)Hiroyasu OhsawaKouichi Ikuma (1 patent)Hiroyasu OhsawaKazuya Matsuura (1 patent)Hiroyasu OhsawaHiroyasu Ohsawa (5 patents)Hiroshi MorikawaHiroshi Morikawa (6 patents)Masatoshi MurakoshiMasatoshi Murakoshi (3 patents)Takashi SakagamiTakashi Sakagami (6 patents)Kouichi IkumaKouichi Ikuma (6 patents)Kazuya MatsuuraKazuya Matsuura (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toyo Roki Seizo Kabushiki Kaisha (5 from 41 patents)


5 patents:

1. 8038027 - Fuel cap and vaporized fuel adsorption canister used in the fuel cap

2. 7584931 - Case holding mechanism

3. 6401751 - Fuel supplying apparatus

4. 6308733 - Fuel supplying apparatus

5. 6206037 - Fuel supplying apparatus

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as of
1/11/2026
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