Growing community of inventors

Ina, Japan

Yukihiro Hirasawa

Average Co-Inventor Count = 5.00

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 = 9

Yukihiro Hirasawa ↔ Motoi Kitabayashi (1 patent)Yukihiro Hirasawa ↔ Takuo Hayashi (1 patent)Yukihiro Hirasawa ↔ Naotoshi Miyazawa (1 patent)Yukihiro Hirasawa ↔ Norihiko Ozawa (1 patent)Yukihiro HirasawaYukihiro Hirasawa (1 patent)Motoi KitabayashiMotoi Kitabayashi (2 patents)Takuo HayashiTakuo Hayashi (1 patent)Naotoshi MiyazawaNaotoshi Miyazawa (1 patent)Norihiko OzawaNorihiko Ozawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (1 from 832,912 patents)

2. Koa Corporation (1 from 147 patents)


1 patent:

1. 4647813 - Electroluminescent device having an additional selenium layer

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as of
1/8/2026
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