Growing community of inventors

Sagamihara, Japan

Shuji Kumagai

Average Co-Inventor Count = 6.00

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 = 55

Shuji Kumagai ↔ Noriaki Oshima (1 patent)Shuji Kumagai ↔ Tetsuo Shibutami (1 patent)Shuji Kumagai ↔ Taishi Furukawa (1 patent)Shuji Kumagai ↔ Kenichi Sekimoto (1 patent)Shuji Kumagai ↔ Kazuhisa Kawano (1 patent)Shuji KumagaiShuji Kumagai (1 patent)Noriaki OshimaNoriaki Oshima (20 patents)Tetsuo ShibutamiTetsuo Shibutami (13 patents)Taishi FurukawaTaishi Furukawa (11 patents)Kenichi SekimotoKenichi Sekimoto (10 patents)Kazuhisa KawanoKazuhisa Kawano (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tosoh Corporation (1 from 895 patents)


1 patent:

1. 6605735 - Ruthenium complex, process for producing the same and process for producing thin film

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as of
1/8/2026
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