Growing community of inventors

Shizuoka, Japan

Kazushige Hirao

Average Co-Inventor Count = 3.43

ph-index = 1

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 = 3

Kazushige Hirao ↔ Chihiro Yazawa (1 patent)Kazushige Hirao ↔ Yoshiki Nakayama (1 patent)Kazushige Hirao ↔ Sadayoshi Matsui (1 patent)Kazushige Hirao ↔ Masamichi Shimizu (1 patent)Kazushige Hirao ↔ Nobuo Takahashi (1 patent)Kazushige HiraoKazushige Hirao (2 patents)Chihiro YazawaChihiro Yazawa (16 patents)Yoshiki NakayamaYoshiki Nakayama (9 patents)Sadayoshi MatsuiSadayoshi Matsui (8 patents)Masamichi ShimizuMasamichi Shimizu (3 patents)Nobuo TakahashiNobuo Takahashi (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ihara Chemical Industry Co., Ltd. (2 from 211 patents)


2 patents:

1. 4250156 - Process for preparing carbonyl sulfide

2. 4212831 - Process for producing triphenylphosphine

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as of
1/8/2026
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