Growing community of inventors

Tokyo, Japan

Sizuo Yamamiya

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 = 3

Sizuo YamamiyaFujio Kobayashi (1 patent)Sizuo YamamiyaKatsuya Tajima (1 patent)Sizuo YamamiyaSizuo Yamamiya (1 patent)Fujio KobayashiFujio Kobayashi (34 patents)Katsuya TajimaKatsuya Tajima (13 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kioritz Corporation (1 from 435 patents)


1 patent:

1. 6742623 - Muffler for internal combustion engine

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1/3/2026
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