Growing community of inventors

Okaya, Japan

Masaki Hirai

Average Co-Inventor Count = 3.43

ph-index = 2

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 = 75

Masaki Hirai ↔ Yoshiki Kinoshita (2 patents)Masaki Hirai ↔ Akira Koyabu (1 patent)Masaki Hirai ↔ Takehiro Kobayashi (1 patent)Masaki Hirai ↔ Michihiro Shimizu (1 patent)Masaki HiraiMasaki Hirai (2 patents)Yoshiki KinoshitaYoshiki Kinoshita (36 patents)Akira KoyabuAkira Koyabu (28 patents)Takehiro KobayashiTakehiro Kobayashi (10 patents)Michihiro ShimizuMichihiro Shimizu (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Seiko Epson Corporation (2 from 33,404 patents)


2 patents:

1. D727254 - Battery pack

2. D686981 - Battery pack

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12/6/2025
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