Growing community of inventors

Tochigi-ken, Japan

Tsutomu Koseki, Deceased

Average Co-Inventor Count = 3.00

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 = 49

Tsutomu Koseki, Deceased ↔ Manabu Shibata (2 patents)Tsutomu Koseki, Deceased ↔ Takeshi Atsugi (2 patents)Tsutomu Koseki, DeceasedTsutomu Koseki, Deceased (2 patents)Manabu ShibataManabu Shibata (10 patents)Takeshi AtsugiTakeshi Atsugi (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kao Corporation (2 from 3,600 patents)


2 patents:

1. 6146244 - Substrate produced by using alumina particles as an abrasive

2. 5868604 - Abrasives composition, substrate and process for producing the same, and

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as of
12/8/2025
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