Growing community of inventors

Nagaokakyo, Japan

Keiji Gemma

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 GemmaHiroyuki Nishi (1 patent)Keiji GemmaMakoto Watanabe (1 patent)Keiji GemmaKeiji Gemma (1 patent)Hiroyuki NishiHiroyuki Nishi (6 patents)Makoto WatanabeMakoto Watanabe (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Omron Tateisi Electronics Co. (1 from 583 patents)


1 patent:

1. 5138521 - Electronic component assembly with direct mounting for proper and

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as of
1/18/2026
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