Growing community of inventors

Tokyo, Japan

Hitoshi Yanagisawa

Average Co-Inventor Count = 6.43

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 = 16

Hitoshi Yanagisawa ↔ Takuji Sekiguchi (2 patents)Hitoshi Yanagisawa ↔ Toshihiko Okina (2 patents)Hitoshi Yanagisawa ↔ Daiichirou Katou (2 patents)Hitoshi Yanagisawa ↔ Kazuo Abe (1 patent)Hitoshi Yanagisawa ↔ Kazuo Kobayashi (1 patent)Hitoshi Yanagisawa ↔ Masaki Gotoh (1 patent)Hitoshi Yanagisawa ↔ Tamotsu Mitsuyasu (1 patent)Hitoshi Yanagisawa ↔ Tsuneharu Hashizume (1 patent)Hitoshi Yanagisawa ↔ Mitsutaka Miyashita (1 patent)Hitoshi YanagisawaHitoshi Yanagisawa (2 patents)Takuji SekiguchiTakuji Sekiguchi (6 patents)Toshihiko OkinaToshihiko Okina (3 patents)Daiichirou KatouDaiichirou Katou (3 patents)Kazuo AbeKazuo Abe (16 patents)Kazuo KobayashiKazuo Kobayashi (3 patents)Masaki GotohMasaki Gotoh (2 patents)Tamotsu MitsuyasuTamotsu Mitsuyasu (2 patents)Tsuneharu HashizumeTsuneharu Hashizume (2 patents)Mitsutaka MiyashitaMitsutaka Miyashita (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kabushiki Kaisha Sankyo Seiki Seisakusho (2 from 307 patents)


2 patents:

1. 5373404 - Helical scan type rotary head drum unit

2. 5206771 - Tape drive mechanism

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as of
12/8/2025
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