Growing community of inventors

Chiisagata, Japan

Hiroyuki Yamada

Average Co-Inventor Count = 4.09

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 = 21

Hiroyuki YamadaToshihiro Kumano (2 patents)Hiroyuki YamadaMasanori Sato (2 patents)Hiroyuki YamadaShiro Takamizawa (2 patents)Hiroyuki YamadaYuji Ishii (2 patents)Hiroyuki YamadaTakashi Naito (1 patent)Hiroyuki YamadaMinoru Ichimura (1 patent)Hiroyuki YamadaHiroyuki Yamada (3 patents)Toshihiro KumanoToshihiro Kumano (8 patents)Masanori SatoMasanori Sato (3 patents)Shiro TakamizawaShiro Takamizawa (3 patents)Yuji IshiiYuji Ishii (3 patents)Takashi NaitoTakashi Naito (7 patents)Minoru IchimuraMinoru Ichimura (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Matsushita Graphic Communication Systems, Inc. (3 from 191 patents)


3 patents:

1. 5559609 - Facsimile transceiver

2. 5295002 - Image communication device

3. 5206745 - Image reading device

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as of
12/18/2025
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