Growing community of inventors

Tokyo, Japan

Hitomi Umehara

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 = 2

Hitomi UmeharaTetsuya Kimijima (1 patent)Hitomi UmeharaAkira Nishina (1 patent)Hitomi UmeharaHitomi Umehara (1 patent)Tetsuya KimijimaTetsuya Kimijima (14 patents)Akira NishinaAkira Nishina (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Sanso Corporation (1 from 182 patents)


1 patent:

1. 6000275 - Method for analyzing impurities in gas and its analyzer

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12/12/2025
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