Growing community of inventors

Saitama, Japan

Hirosaburo Ejiri

Average Co-Inventor Count = 8.00

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

Hirosaburo EjiriIsao Yamatsu (1 patent)Hirosaburo EjiriShizumasa Kijima (1 patent)Hirosaburo EjiriKimio Hamamura (1 patent)Hirosaburo EjiriEiichi Morita (1 patent)Hirosaburo EjiriKeizo Takayanagi (1 patent)Hirosaburo EjiriYasuhide Tanaka (1 patent)Hirosaburo EjiriYukio Morita (1 patent)Hirosaburo EjiriHirosaburo Ejiri (1 patent)Isao YamatsuIsao Yamatsu (84 patents)Shizumasa KijimaShizumasa Kijima (27 patents)Kimio HamamuraKimio Hamamura (18 patents)Eiichi MoritaEiichi Morita (5 patents)Keizo TakayanagiKeizo Takayanagi (5 patents)Yasuhide TanakaYasuhide Tanaka (3 patents)Yukio MoritaYukio Morita (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Eisai Company, Limited (1 from 677 patents)


1 patent:

1. 4163864 - Process for preparing 2-methyl-3-prenyl-4,5,6-trimethoxyphenol

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12/29/2025
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