Growing community of inventors

Aomori-ken, Japan

Masataka Kumaki

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 = 1

Masataka Kumaki ↔ Takeshi Shimizu (1 patent)Masataka KumakiMasataka Kumaki (1 patent)Takeshi ShimizuTakeshi Shimizu (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Alps Electric Co., Ltd. (1 from 4,048 patents)


1 patent:

1. 6525619 - Crystal-oscillator circuit for preventing stopping of oscillation

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as of
12/17/2025
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