Growing community of inventors

Takatsuki, Japan

Umekawa Osamu

Average Co-Inventor Count = 3.00

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

Umekawa Osamu ↔ Takemori Koji (1 patent)Umekawa Osamu ↔ Katayama Sakae (1 patent)Umekawa OsamuUmekawa Osamu (1 patent)Takemori KojiTakemori Koji (1 patent)Katayama SakaeKatayama Sakae (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Katayama Chemical Works Co., Ltd. (1 from 15 patents)


1 patent:

1. 4123443 - Process for the preparation of bromoacetic acid and esters thereof

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12/14/2025
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