Growing community of inventors

Ueda, Japan

Junji Kumai

Average Co-Inventor Count = 2.00

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 = 3

Junji Kumai ↔ Seiji Onuma (1 patent)Junji KumaiJunji Kumai (1 patent)Seiji OnumaSeiji Onuma (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hioki Denki Kabushiki Kaisha (1 from 49 patents)


1 patent:

1. D395834 - Insulation resistance tester

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12/11/2025
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