Growing community of inventors

Tokyo, Japan

Tohru Ichikawa

Average Co-Inventor Count = 2.40

ph-index = 3

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 = 26

Tohru Ichikawa ↔ Etsuro Saito (2 patents)Tohru Ichikawa ↔ Masayoshi Tsuchiya (1 patent)Tohru Ichikawa ↔ Tsuneo Nemoto (1 patent)Tohru Ichikawa ↔ Shinichiro Takahashi (1 patent)Tohru IchikawaTohru Ichikawa (3 patents)Etsuro SaitoEtsuro Saito (49 patents)Masayoshi TsuchiyaMasayoshi Tsuchiya (17 patents)Tsuneo NemotoTsuneo Nemoto (16 patents)Shinichiro TakahashiShinichiro Takahashi (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sony Corporation (3 from 58,131 patents)


3 patents:

1. D314762 - Tape player

2. D284665 - Magnetic disc jacket

3. D277859 - Magnetic disc

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/1/2026
Loading…