Growing community of inventors

Kitakyushu, Japan

Kazuki Otsuka

Average Co-Inventor Count = 2.86

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 = 35

Kazuki Otsuka ↔ Minoru Tani (9 patents)Kazuki Otsuka ↔ Masafumi Ishikawa (9 patents)Kazuki Otsuka ↔ Hiroshi Shimoda (6 patents)Kazuki Otsuka ↔ Hirotaka Nakabayashi (3 patents)Kazuki Otsuka ↔ Masanobu Wano (2 patents)Kazuki OtsukaKazuki Otsuka (15 patents)Minoru TaniMinoru Tani (76 patents)Masafumi IshikawaMasafumi Ishikawa (29 patents)Hiroshi ShimodaHiroshi Shimoda (11 patents)Hirotaka NakabayashiHirotaka Nakabayashi (17 patents)Masanobu WanoMasanobu Wano (11 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toto Ltd. (15 from 1,192 patents)


15 patents:

1. D1089575 - Toilet seat

2. D1089574 - Toilet seat

3. D1067394 - Toilet seat

4. D999349 - Toilet

5. D954919 - Toilet seat

6. D952110 - Toilet seat

7. D886966 - Water closet

8. D884853 - Water closet

9. D884852 - Water closet

10. D884847 - Water closet

11. D884851 - Water closet

12. D882728 - Water closet

13. D882739 - Water closet

14. D882741 - Water closet

15. D882742 - Water closet

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idiyas.com
as of
12/19/2025
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