Growing community of inventors

Kurita, Japan

Fumio Nakai

Average Co-Inventor Count = 3.20

ph-index = 3

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 = 24

Fumio NakaiHajime Sakano (3 patents)Fumio NakaiYukio Tomari (3 patents)Fumio NakaiIchiro Kondou (1 patent)Fumio NakaiHidetaka Matsuzaki (1 patent)Fumio NakaiKoji Matsumoto (1 patent)Fumio NakaiFumio Nakai (4 patents)Hajime SakanoHajime Sakano (15 patents)Yukio TomariYukio Tomari (3 patents)Ichiro KondouIchiro Kondou (1 patent)Hidetaka MatsuzakiHidetaka Matsuzaki (1 patent)Koji MatsumotoKoji Matsumoto (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sumitomo Naugatuck Co., Ltd. (4 from 39 patents)


4 patents:

1. 5250590 - Flame retardant resin composition

2. 4419491 - Thermoplastic resin composition excellent in color development

3. 4373063 - Elastomeric composition

4. 4271230 - Foamed urethane composite

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as of
1/3/2026
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