Growing community of inventors

Hamamatsu, Japan

Keiichiro Soma

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 = 0

Keiichiro SomaArata Imai (1 patent)Keiichiro SomaTakeshi Nonaka (1 patent)Keiichiro SomaKeiichiro Soma (2 patents)Arata ImaiArata Imai (8 patents)Takeshi NonakaTakeshi Nonaka (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yamaha Corporation (2 from 5,451 patents)


2 patents:

1. 12307158 - Audio mixer, and method of controlling audio mixer

2. 12156005 - Sound processing method, sound device, and sound processing system

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as of
12/19/2025
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