Growing community of inventors

Kitakatsushika-gun, Japan

Junko Yamakawa

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 = 4

Junko Yamakawa ↔ Norihisa Miyajima (1 patent)Junko Yamakawa ↔ Seiichiro Hashimoto (1 patent)Junko Yamakawa ↔ Susumu Matsumoto (1 patent)Junko Yamakawa ↔ Iwao Kitamura (1 patent)Junko Yamakawa ↔ Takayuki Ichihara (1 patent)Junko YamakawaJunko Yamakawa (1 patent)Norihisa MiyajimaNorihisa Miyajima (5 patents)Seiichiro HashimotoSeiichiro Hashimoto (2 patents)Susumu MatsumotoSusumu Matsumoto (1 patent)Iwao KitamuraIwao Kitamura (1 patent)Takayuki IchiharaTakayuki Ichihara (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tsuchiya Mfg. Co., Ltd. (1 from 14 patents)


1 patent:

1. 5714030 - Plastisol type adhesive composition used in filter for

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12/12/2025
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