Growing community of inventors

Yokohama, Japan

Naomasa Sugiyama

Average Co-Inventor Count = 7.00

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 = 37

Naomasa Sugiyama ↔ Mitsuo Uchida (1 patent)Naomasa Sugiyama ↔ Michio Nishi (1 patent)Naomasa Sugiyama ↔ Mamoru Kaneko (1 patent)Naomasa Sugiyama ↔ Tadashi Yamada (1 patent)Naomasa Sugiyama ↔ Nobuhiko Takeda (1 patent)Naomasa Sugiyama ↔ Ichiro Terada (1 patent)Naomasa SugiyamaNaomasa Sugiyama (1 patent)Mitsuo UchidaMitsuo Uchida (5 patents)Michio NishiMichio Nishi (4 patents)Mamoru KanekoMamoru Kaneko (1 patent)Tadashi YamadaTadashi Yamada (1 patent)Nobuhiko TakedaNobuhiko Takeda (1 patent)Ichiro TeradaIchiro Terada (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mitsubishi Chemical Industries Limited (1 from 614 patents)

2. Yoshino Gypsum Co., Ltd. (1 from 68 patents)


1 patent:

1. 4042409 - Water repellent gypsum composition

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as of
12/18/2025
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