Growing community of inventors

Kokubu, Japan

Seiichi Hirahara

Average Co-Inventor Count = 4.44

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 = 9

Seiichi Hirahara ↔ Nobuyoshi Fujikawa (1 patent)Seiichi Hirahara ↔ Tatsuji Furuse (1 patent)Seiichi Hirahara ↔ Shuji Nakazawa (1 patent)Seiichi Hirahara ↔ Akira Nakayama (1 patent)Seiichi Hirahara ↔ Sumie Koyasu (1 patent)Seiichi Hirahara ↔ Akira Imoto (1 patent)Seiichi Hirahara ↔ Tsuguo Koyasu (1 patent)Seiichi HiraharaSeiichi Hirahara (2 patents)Nobuyoshi FujikawaNobuyoshi Fujikawa (14 patents)Tatsuji FuruseTatsuji Furuse (8 patents)Shuji NakazawaShuji Nakazawa (6 patents)Akira NakayamaAkira Nakayama (3 patents)Sumie KoyasuSumie Koyasu (1 patent)Akira ImotoAkira Imoto (1 patent)Tsuguo KoyasuTsuguo Koyasu (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kyocera Corporation (2 from 6,656 patents)


2 patents:

1. 6417461 - Circuit substrate

2. 5432135 - Dielectric ceramic composition for high frequency

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as of
12/20/2025
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