Growing community of inventors

Tokyo, Japan

Keiko Koyama

Average Co-Inventor Count = 2.40

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

Keiko KoyamaHitoshi Mishiro (2 patents)Keiko KoyamaMinoru Tamada (2 patents)Keiko KoyamaTatsuro Abe (9 patents)Keiko KoyamaShinji Kobune (2 patents)Keiko KoyamaKeiko Koyama (4 patents)Hitoshi MishiroHitoshi Mishiro (10 patents)Minoru TamadaMinoru Tamada (10 patents)Tatsuro AbeTatsuro Abe (9 patents)Shinji KobuneShinji Kobune (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Agc Inc. (4 from 1,030 patents)

2. Kabushiki Kaisha Toshiba (52,766 patents)

3. Toshiba Infrastructure Systems & Solutions Corporation (279 patents)


4 patents:

1. 11339087 - Antiglare glass substrate

2. 10981827 - Antiglare glass substrate

3. 10518504 - Plate with printing layer and display device using the same

4. 10220595 - Plate with printing layer and display device using the same

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1/8/2026
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