Growing community of inventors

Tokyo, Japan

Ryohei Ishida

Average Co-Inventor Count = 3.75

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 = 5

Ryohei Ishida ↔ Yoshiyuki Kato (1 patent)Ryohei Ishida ↔ Masaki Hamada (1 patent)Ryohei Ishida ↔ Hiroyasu Negishi (1 patent)Ryohei Ishida ↔ Eiji Ueno (1 patent)Ryohei Ishida ↔ Akira Torii (1 patent)Ryohei Ishida ↔ Hitoshi Terashima (1 patent)Ryohei IshidaRyohei Ishida (2 patents)Yoshiyuki KatoYoshiyuki Kato (58 patents)Masaki HamadaMasaki Hamada (16 patents)Hiroyasu NegishiHiroyasu Negishi (12 patents)Eiji UenoEiji Ueno (7 patents)Akira ToriiAkira Torii (3 patents)Hitoshi TerashimaHitoshi Terashima (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nifco Inc. (1 from 1,193 patents)

2. Mitsubishi Electronic Corporation (1 from 21 patents)

3. Mitsubishi Electric Corporation (15,906 patents)


2 patents:

1. 8520007 - Graphic drawing device and graphic drawing method

2. D364413 - Concrete test piece forming mold

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as of
12/27/2025
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