Growing community of inventors

Tokyo, Japan

Hirofumi Kai

Average Co-Inventor Count = 6.00

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 = 2

Hirofumi Kai ↔ Naoki Nakamura (1 patent)Hirofumi Kai ↔ Tomonori Sato (1 patent)Hirofumi Kai ↔ Satoru Nakai (1 patent)Hirofumi Kai ↔ Terumasa Yasui (1 patent)Hirofumi Kai ↔ Hiroaki Onishi (1 patent)Hirofumi KaiHirofumi Kai (1 patent)Naoki NakamuraNaoki Nakamura (59 patents)Tomonori SatoTomonori Sato (27 patents)Satoru NakaiSatoru Nakai (9 patents)Terumasa YasuiTerumasa Yasui (1 patent)Hiroaki OnishiHiroaki Onishi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Electric Corporation (1 from 15,844 patents)


1 patent:

1. 8843885 - Program creation support device

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12/5/2025
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