Growing community of inventors

Tokyo, Japan

Keizo Ishihara

Average Co-Inventor Count = 4.00

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

Keizo IshiharaYukio Sato (1 patent)Keizo IshiharaHidenobu Magami (1 patent)Keizo IshiharaHideo Fujihara (1 patent)Keizo IshiharaKeizo Ishihara (1 patent)Yukio SatoYukio Sato (21 patents)Hidenobu MagamiHidenobu Magami (5 patents)Hideo FujiharaHideo Fujihara (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nsk Corporation (1 from 2,430 patents)


1 patent:

1. 5320434 - Swing ladder bearing

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as of
12/6/2025
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