Growing community of inventors

Tokyo, Japan

Kotaro Kumagai

Average Co-Inventor Count = 2.79

ph-index = 6

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 = 74

Kotaro KumagaiAtsushi Ishii (11 patents)Kotaro KumagaiMasayuki Taguchi (10 patents)Kotaro KumagaiAtsushi Koike (6 patents)Kotaro KumagaiShumpei Toyomi (3 patents)Kotaro KumagaiNaoyuki Makita (2 patents)Kotaro KumagaiDaisuke Fujita (1 patent)Kotaro KumagaiHidetaka Okada (1 patent)Kotaro KumagaiShogo Suzuki (1 patent)Kotaro KumagaiHideo Tobata (1 patent)Kotaro KumagaiUkyo Miyazawa (1 patent)Kotaro KumagaiTomohiro Amano (1 patent)Kotaro KumagaiKotaro Kumagai (18 patents)Atsushi IshiiAtsushi Ishii (72 patents)Masayuki TaguchiMasayuki Taguchi (23 patents)Atsushi KoikeAtsushi Koike (60 patents)Shumpei ToyomiShumpei Toyomi (4 patents)Naoyuki MakitaNaoyuki Makita (9 patents)Daisuke FujitaDaisuke Fujita (34 patents)Hidetaka OkadaHidetaka Okada (32 patents)Shogo SuzukiShogo Suzuki (19 patents)Hideo TobataHideo Tobata (10 patents)Ukyo MiyazawaUkyo Miyazawa (5 patents)Tomohiro AmanoTomohiro Amano (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tachi-s Co., Ltd. (17 from 576 patents)

2. Stanley Electric Co., Ltd (1 from 1,438 patents)


18 patents:

1. 10823364 - Vehicular lamp

2. 10543765 - Vehicle seat

3. D861361 - Vehicle seats

4. 10414306 - Seat apparatus

5. D856690 - Vehicle seat

6. 10343569 - Seat for vehicles

7. 10336225 - Vehicle seat

8. 10166891 - Vehicular seat

9. 9987960 - Vehicle seat

10. 9981580 - Seat for vehicle

11. D799872 - Vehicle seat

12. D790240 - Vehicle seat

13. D789699 - Vehicle seat

14. D789700 - Vehicle seat

15. D789109 - Vehicle seat

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as of
12/7/2025
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