Growing community of inventors

Tokyo, Japan

Kei Doioka

Average Co-Inventor Count = 5.00

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

Kei Doioka ↔ Shinya Watanabe (1 patent)Kei Doioka ↔ Kazuyuki Iizuka (1 patent)Kei Doioka ↔ Takekazu Masui (1 patent)Kei Doioka ↔ Haruka Matsubara (1 patent)Kei DoiokaKei Doioka (1 patent)Shinya WatanabeShinya Watanabe (88 patents)Kazuyuki IizukaKazuyuki Iizuka (20 patents)Takekazu MasuiTakekazu Masui (6 patents)Haruka MatsubaraHaruka Matsubara (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tamura Corporation (1 from 190 patents)

2. Koha Co., Ltd. (1 from 37 patents)


1 patent:

1. 10526721 - Method for growing β-GAO-based single crystal

Please report any incorrect information to support@idiyas.com
idiyas.com
as of
1/22/2026
Loading…