Growing community of inventors

Tokyo, Japan

Makoto Sumiyoshi

Average Co-Inventor Count = 1.00

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

Makoto SumiyoshiMakoto Sumiyoshi (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Subaru Corporation (1 from 2,091 patents)


1 patent:

1. 12512286 - Relay device and power supply device for vehicle

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as of
1/9/2026
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