Growing community of inventors

Hasuda, Japan

Shigeo Sumi

Average Co-Inventor Count = 2.00

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 = 2

Shigeo Sumi ↔ Hideaki Nagata (1 patent)Shigeo SumiShigeo Sumi (1 patent)Hideaki NagataHideaki Nagata (13 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Somar Manufacturing Co., Ltd. (1 from 12 patents)


1 patent:

1. D266252 - Micro fiche duplicator

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1/5/2026
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