Growing community of inventors

Tokyo, Japan

Katsuo Sugai

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 = 43

Katsuo SugaiYutaka Shirakashi (3 patents)Katsuo SugaiSakiko Imai (2 patents)Katsuo SugaiToshihiko Sato (2 patents)Katsuo SugaiAkemi Irikura (1 patent)Katsuo SugaiToshio Yaguchi (1 patent)Katsuo SugaiYoshihiko Isobedate (1 patent)Katsuo SugaiRyuji Yamakawa (1 patent)Katsuo SugaiShinkichi Kojima (1 patent)Katsuo SugaiYasuhisa Sotokawa (0 patent)Katsuo SugaiSanae Sakuma (0 patent)Katsuo SugaiKatsuo Sugai (2 patents)Yutaka ShirakashiYutaka Shirakashi (3 patents)Sakiko ImaiSakiko Imai (2 patents)Toshihiko SatoToshihiko Sato (2 patents)Akemi IrikuraAkemi Irikura (1 patent)Toshio YaguchiToshio Yaguchi (1 patent)Yoshihiko IsobedateYoshihiko Isobedate (1 patent)Ryuji YamakawaRyuji Yamakawa (1 patent)Shinkichi KojimaShinkichi Kojima (1 patent)Yasuhisa SotokawaYasuhisa Sotokawa (0 patent)Sanae SakumaSanae Sakuma (0 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Aderans Company Limited (1 from 53 patents)

2. Unihair Co., Ltd. (1 from 4 patents)


2 patents:

1. 8104486 - Hair-increasing device and method of producing the same

2. 6691714 - Wearer's own hair utilizing type wig and method for manufacturing the same

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12/16/2025
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