Growing community of inventors

Yokosuka, Japan

Masatoyo Sumida

Average Co-Inventor Count = 8.00

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 = 38

Masatoyo Sumida ↔ Yukio Nakano (1 patent)Masatoyo Sumida ↔ Yasushi Takahashi (1 patent)Masatoyo Sumida ↔ Minoru Maeda (1 patent)Masatoyo Sumida ↔ Yoshitaka Takahashi (1 patent)Masatoyo Sumida ↔ Akihiro Hori (1 patent)Masatoyo Sumida ↔ Ikuo Tokizawa (1 patent)Masatoyo Sumida ↔ Yoshihiko Miyano (1 patent)Masatoyo SumidaMasatoyo Sumida (1 patent)Yukio NakanoYukio Nakano (84 patents)Yasushi TakahashiYasushi Takahashi (73 patents)Minoru MaedaMinoru Maeda (44 patents)Yoshitaka TakahashiYoshitaka Takahashi (17 patents)Akihiro HoriAkihiro Hori (8 patents)Ikuo TokizawaIkuo Tokizawa (2 patents)Yoshihiko MiyanoYoshihiko Miyano (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,485 patents)

2. Nippon Telegraph and Telephone Corporation (1 from 5,289 patents)


1 patent:

1. 4818995 - Parallel transmission system

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12/8/2025
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