Growing community of inventors

Jyoyo, Japan

Keiji Sugiyama

Average Co-Inventor Count = 3.00

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 = 21

Keiji SugiyamaToshiya Mori (1 patent)Keiji SugiyamaNaoya Takao (1 patent)Keiji SugiyamaKeiji Sugiyama (1 patent)Toshiya MoriToshiya Mori (79 patents)Naoya TakaoNaoya Takao (30 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


1 patent:

1. 7225342 - Terminal apparatus, communication method, and communication system

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12/5/2025
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