Growing community of inventors

Fujisawa, Japan

Masayuki Kohama

Average Co-Inventor Count = 6.15

ph-index = 2

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 = 27

Masayuki KohamaYoichi Nakamura (1 patent)Masayuki KohamaShigenori Taga (1 patent)Masayuki KohamaKouichi Tsunoda (1 patent)Masayuki KohamaTakayuki Miyaji (1 patent)Masayuki KohamaTakashi Asa (1 patent)Masayuki KohamaTadayoshi Umeki (1 patent)Masayuki KohamaKenjiro Makishima (1 patent)Masayuki KohamaKiyomi Morino (1 patent)Masayuki KohamaToshiaki Hatano (1 patent)Masayuki KohamaMitsuhiro Hasegawa (1 patent)Masayuki KohamaHideaki Shinyashiki (1 patent)Masayuki KohamaMasayuki Kohama (2 patents)Yoichi NakamuraYoichi Nakamura (25 patents)Shigenori TagaShigenori Taga (8 patents)Kouichi TsunodaKouichi Tsunoda (6 patents)Takayuki MiyajiTakayuki Miyaji (4 patents)Takashi AsaTakashi Asa (4 patents)Tadayoshi UmekiTadayoshi Umeki (2 patents)Kenjiro MakishimaKenjiro Makishima (1 patent)Kiyomi MorinoKiyomi Morino (1 patent)Toshiaki HatanoToshiaki Hatano (1 patent)Mitsuhiro HasegawaMitsuhiro Hasegawa (1 patent)Hideaki ShinyashikiHideaki Shinyashiki (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Oiles Corporation (2 from 268 patents)

2. Ohi Seisakusho Co., Ltd. (1 from 242 patents)


2 patents:

1. 6158559 - Bearing device of piston rod

2. 5092017 - Automotive door hinge assembly, bush employed therein and method for

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12/16/2025
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