Growing community of inventors

Inazawa, Japan

Keiko Watanabe

Average Co-Inventor Count = 3.46

ph-index = 2

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 = 18

Keiko WatanabeKaoru Kamiya (3 patents)Keiko WatanabeKiyohiko Ohta (3 patents)Keiko WatanabeMakoto Nakagawa (1 patent)Keiko WatanabeTomio Nagao (1 patent)Keiko WatanabeKeiko Watanabe (3 patents)Kaoru KamiyaKaoru Kamiya (4 patents)Kiyohiko OhtaKiyohiko Ohta (3 patents)Makoto NakagawaMakoto Nakagawa (13 patents)Tomio NagaoTomio Nagao (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tomei Sangyo Co., Ltd. (3 from 5 patents)


3 patents:

1. 5279674 - Method of treating contact lens

2. 5181604 - Contact lens holder and treating device

3. 5167323 - Lens treating device for treating contact lens

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idiyas.com
as of
12/15/2025
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