Growing community of inventors

Yokohama, Japan

Akiko Kumagai

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 = 1

Akiko KumagaiKenji Hiratsuka (1 patent)Akiko KumagaiMitsuo Takahashi (1 patent)Akiko KumagaiAkiko Kumagai (1 patent)Kenji HiratsukaKenji Hiratsuka (18 patents)Mitsuo TakahashiMitsuo Takahashi (12 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sumitomo Electric Industries, Limited (1 from 10,239 patents)


1 patent:

1. 7807489 - Light-emitting device with a protection layer to prevent the inter-diffusion of zinc (Zn) atoms

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12/5/2025
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