Growing community of inventors

Fujikawaguchiko-machi, Japan

Koichi Hada

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 = 1

Koichi Hada ↔ Junji Miyashita (1 patent)Koichi Hada ↔ Kiyokazu Watanabe (1 patent)Koichi Hada ↔ Makoto Yasuhara (1 patent)Koichi Hada ↔ Takahiro Shimizu (1 patent)Koichi HadaKoichi Hada (1 patent)Junji MiyashitaJunji Miyashita (50 patents)Kiyokazu WatanabeKiyokazu Watanabe (13 patents)Makoto YasuharaMakoto Yasuhara (5 patents)Takahiro ShimizuTakahiro Shimizu (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Citizen Electronics Co., Ltd. (1 from 608 patents)

2. Citizen Holdings Company, Ltd. (1 from 450 patents)


1 patent:

1. 8616749 - Planar light-emitting device

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as of
12/9/2025
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