Growing community of inventors

Tokyo, Japan

Sawa Izumi

Average Co-Inventor Count = 4.44

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 = 5

Sawa IzumiNorimasa Yokoyama (4 patents)Sawa IzumiShuichi Hayashi (4 patents)Sawa IzumiShigeru Kusano (3 patents)Sawa IzumiNaoaki Kabasawa (1 patent)Sawa IzumiMakoto Nagaoka (1 patent)Sawa IzumiHiroshi Ookuma (1 patent)Sawa IzumiSawa Izumi (4 patents)Norimasa YokoyamaNorimasa Yokoyama (54 patents)Shuichi HayashiShuichi Hayashi (54 patents)Shigeru KusanoShigeru Kusano (28 patents)Naoaki KabasawaNaoaki Kabasawa (29 patents)Makoto NagaokaMakoto Nagaoka (23 patents)Hiroshi OokumaHiroshi Ookuma (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Hodogaya Chemical Co., Ltd. (4 from 328 patents)


4 patents:

1. 9564600 - Compound having an indolocarbazole ring structure and organic electroluminescent device

2. 8624228 - Compound having pyridoindole ring structure bonded with substituted pyridyl group, and organic electroluminescent device

3. 8586210 - Compound having substituted anthracene ring structure and pyridoindole ring structure and organic electroluminescence device

4. 8377573 - Compound having substituted pyridyl group and pyridoindole ring structure linked through phenylene group, and organic electroluminescent device

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as of
12/7/2025
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