Growing community of inventors

Ibaraki, Japan

Keiko Iwasa

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

Keiko Iwasa ↔ Isao Niimura (1 patent)Keiko Iwasa ↔ Kayoko Watanabe (1 patent)Keiko Iwasa ↔ Osamu Mukudai (1 patent)Keiko Iwasa ↔ Yuuji Matsuura (1 patent)Keiko IwasaKeiko Iwasa (1 patent)Isao NiimuraIsao Niimura (7 patents)Kayoko WatanabeKayoko Watanabe (7 patents)Osamu MukudaiOsamu Mukudai (7 patents)Yuuji MatsuuraYuuji Matsuura (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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


1 patent:

1. 5679489 - Electrostatic image developing toner

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12/11/2025
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