Growing community of inventors

Tokyo, Japan

Hisayoshi Ohkoshi

Average Co-Inventor Count = 2.25

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 = 23

Hisayoshi Ohkoshi ↔ Yasuaki Koiwa (2 patents)Hisayoshi Ohkoshi ↔ Yoshiki Sasaki (2 patents)Hisayoshi Ohkoshi ↔ Yuta Watanabe (2 patents)Hisayoshi Ohkoshi ↔ Yukihiro Kon (2 patents)Hisayoshi OhkoshiHisayoshi Ohkoshi (6 patents)Yasuaki KoiwaYasuaki Koiwa (36 patents)Yoshiki SasakiYoshiki Sasaki (5 patents)Yuta WatanabeYuta Watanabe (5 patents)Yukihiro KonYukihiro Kon (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Senju Sprinkler Company Limited (6 from 58 patents)


6 patents:

1. 11054068 - Connection structure for fire extinguishing system piping

2. D894339 - Sprinkler head

3. D887800 - Spanner wrench

4. D887527 - Wrench socket for sprinkler head

5. D886945 - Deflector for sprinkler head

6. D821550 - Pipe joint

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as of
1/9/2026
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