Growing community of inventors

Takaoka, Japan

Hiroshi Sumiya

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

Hiroshi SumiyaTakuma Yasuda (3 patents)Hiroshi SumiyaYu Seok Yang (3 patents)Hiroshi SumiyaIn Seob Park (3 patents)Hiroshi SumiyaYukio Fukushima (3 patents)Hiroshi SumiyaJunji Ipposhi (0 patent)Hiroshi SumiyaHiroshi Sumiya (3 patents)Takuma YasudaTakuma Yasuda (26 patents)Yu Seok YangYu Seok Yang (22 patents)In Seob ParkIn Seob Park (6 patents)Yukio FukushimaYukio Fukushima (4 patents)Junji IpposhiJunji Ipposhi (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nippon Soda Co., Ltd. (3 from 516 patents)

2. Kyushu University (3 from 431 patents)


3 patents:

1. 10522763 - Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine

2. 10497878 - Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine

3. 10399960 - Dicyanopyrazine compound, luminescent material, luminescence device using the same, and method for producing 2,5-dicyano-3,6-dihalogenopyrazine

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as of
12/6/2025
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