Growing community of inventors

Kitakyushu, Japan

Koichi Watanabe

Average Co-Inventor Count = 2.53

ph-index = 5

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 = 76

Koichi WatanabeAyse Birsel (8 patents)Koichi WatanabeJunichi Tani (3 patents)Koichi WatanabeNoriko Hiraga (3 patents)Koichi WatanabeKenichi Nagato (1 patent)Koichi WatanabeKuniaki Shinohara (1 patent)Koichi WatanabeKoichi Watanabe (8 patents)Ayse BirselAyse Birsel (8 patents)Junichi TaniJunichi Tani (4 patents)Noriko HiragaNoriko Hiraga (3 patents)Kenichi NagatoKenichi Nagato (8 patents)Kuniaki ShinoharaKuniaki Shinohara (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toto Ltd. (8 from 1,192 patents)


8 patents:

1. D432219 - Toilet seat with cover

2. D413658 - Combined toilet seat and cover

3. D412974 - Water closet

4. 5666672 - Toilet attachment with easily detachable seat

5. D383833 - Water closet

6. D381961 - Remote controller

7. D382046 - Water closet

8. D381408 - Water closet

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idiyas.com
as of
12/20/2025
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