Growing community of inventors

Tokyo, Japan

Masahiro Dan

Average Co-Inventor Count = 5.00

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 = 7

Masahiro Dan ↔ Tsuyoshi Kaneda (1 patent)Masahiro Dan ↔ Soichi Torisawa (1 patent)Masahiro Dan ↔ Sadao Yokoo (1 patent)Masahiro Dan ↔ Tadashi Shimomura (1 patent)Masahiro DanMasahiro Dan (1 patent)Tsuyoshi KanedaTsuyoshi Kaneda (6 patents)Soichi TorisawaSoichi Torisawa (2 patents)Sadao YokooSadao Yokoo (1 patent)Tadashi ShimomuraTadashi Shimomura (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hitachi, Ltd. (1 from 42,488 patents)

2. Nippon Sheet Glass Company, Limited (1 from 1,156 patents)

3. Hitachi Microcomputer Engineering, Ltd. (1 from 149 patents)


1 patent:

1. 4634270 - Protective cover

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as of
12/10/2025
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