Growing community of inventors

Tokyo, Japan

Mayuko Sumiya

Average Co-Inventor Count = 4.00

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

Mayuko Sumiya ↔ Kohei Masuda (1 patent)Mayuko Sumiya ↔ Masaaki Itou (1 patent)Mayuko Sumiya ↔ Haruko Nagai (1 patent)Mayuko SumiyaMayuko Sumiya (1 patent)Kohei MasudaKohei Masuda (3 patents)Masaaki ItouMasaaki Itou (2 patents)Haruko NagaiHaruko Nagai (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Eneos Corporation (1 from 135 patents)


1 patent:

1. 11560527 - Lubricating oil composition for transmission

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as of
12/8/2025
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