Growing community of inventors

Tukuba, Japan

Hirofumi Yamada

Average Co-Inventor Count = 4.00

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 = 1

Hirofumi YamadaHiroyuki Kado (1 patent)Hirofumi YamadaTakao Tohda (1 patent)Hirofumi YamadaNobuhiro Tsuda (1 patent)Hirofumi YamadaHirofumi Yamada (1 patent)Hiroyuki KadoHiroyuki Kado (45 patents)Takao TohdaTakao Tohda (23 patents)Nobuhiro TsudaNobuhiro Tsuda (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Electric Industrial Co., Ltd. (1 from 27,375 patents)

2. Agency of Industrial Science and Technology (1 from 1,037 patents)


1 patent:

1. 5186789 - Method of making a cantilever stylus for use in an atomic force

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12/9/2025
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