Growing community of inventors

Kisarazu, Japan

Takashi Kumazawa

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 = 0

Takashi KumazawaYoshio Hironaka (1 patent)Takashi KumazawaTakashi Kumazawa (1 patent)Yoshio HironakaYoshio Hironaka (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Idemitsu Kosan Company, Limited (1 from 2,271 patents)


1 patent:

1. 4551555 - Process for the production of carbonyl compounds

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as of
12/19/2025
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