Growing community of inventors

Kimitsu, Japan

Yumi Nakayama

Average Co-Inventor Count = 3.00

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

Yumi NakayamaKoichi Suga (2 patents)Yumi NakayamaYasuhiro Ishikawa (1 patent)Yumi NakayamaAki Yamada (1 patent)Yumi NakayamaYumi Nakayama (2 patents)Koichi SugaKoichi Suga (10 patents)Yasuhiro IshikawaYasuhiro Ishikawa (48 patents)Aki YamadaAki Yamada (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Idemitsu Kosan Company, Limited (2 from 2,271 patents)


2 patents:

1. 12024629 - Polycarbonate-based resin, production method therefor, and polycarbonate-based resin composition

2. 10239993 - Branched polycarbonate resin and method for producing same

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12/9/2025
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