Growing community of inventors

Kyoto, Japan

Naoki Yumiyama

Average Co-Inventor Count = 4.00

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

Naoki Yumiyama ↔ Osamu Asao (1 patent)Naoki Yumiyama ↔ Shuji Sonoi (1 patent)Naoki Yumiyama ↔ Sayaka Ishida (1 patent)Naoki Yumiyama ↔ Yasuhiro Torita (1 patent)Naoki Yumiyama ↔ Masahiko Iwata (1 patent)Naoki Yumiyama ↔ Yasushi Nakano (1 patent)Naoki YumiyamaNaoki Yumiyama (2 patents)Osamu AsaoOsamu Asao (5 patents)Shuji SonoiShuji Sonoi (4 patents)Sayaka IshidaSayaka Ishida (2 patents)Yasuhiro ToritaYasuhiro Torita (2 patents)Masahiko IwataMasahiko Iwata (1 patent)Yasushi NakanoYasushi Nakano (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushikikaisha Shofu (2 from 86 patents)


2 patents:

1. D977651 - Abrasive disc for dental prosthesis

2. 9615895 - Dental polishing instrument

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as of
1/6/2026
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