Growing community of inventors

Tokyo, Japan

Keiko Takemata

Average Co-Inventor Count = 3.08

ph-index = 4

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 = 105

Keiko Takemata ↔ Eiichi Yoshioka (5 patents)Keiko Takemata ↔ Akihiko Kobayashi (4 patents)Keiko Takemata ↔ Yasuhide Saito (2 patents)Keiko Takemata ↔ Takeshi Hasegawa (2 patents)Keiko Takemata ↔ Shigeki Mori (1 patent)Keiko Takemata ↔ Osamu Murakami (1 patent)Keiko TakemataKeiko Takemata (6 patents)Eiichi YoshiokaEiichi Yoshioka (30 patents)Akihiko KobayashiAkihiko Kobayashi (29 patents)Yasuhide SaitoYasuhide Saito (8 patents)Takeshi HasegawaTakeshi Hasegawa (7 patents)Shigeki MoriShigeki Mori (74 patents)Osamu MurakamiOsamu Murakami (13 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Canon Kabushiki Kaisha (6 from 90,697 patents)


6 patents:

1. D303981 - Dest-top electronic calculator

2. D301885 - Hand held electronic dialer

3. D298545 - Desk-top electronic calculator

4. D298548 - Desk-top electronic calculator

5. D298546 - Desk-top electronic calculator

6. D298547 - Desk-top electronic calculator

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as of
12/28/2025
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