Growing community of inventors

Toyota, Japan

Yahiko Kumai

Average Co-Inventor Count = 2.53

ph-index = 13

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 = 478

Yahiko KumaiDaichi Kimura (13 patents)Yahiko KumaiTomonori Matsumoto (7 patents)Yahiko KumaiTatsuya Takei (7 patents)Yahiko KumaiHiroyuki Tada (5 patents)Yahiko KumaiKouichi Suga (5 patents)Yahiko KumaiKenji Kido (4 patents)Yahiko KumaiYo Hiruta (4 patents)Yahiko KumaiTokiko Gamou (3 patents)Yahiko KumaiKen Nagasaka (3 patents)Yahiko KumaiYukinobu Morioka (2 patents)Yahiko KumaiTsuyoshi Kawashima (2 patents)Yahiko KumaiTetsu Endoh (1 patent)Yahiko KumaiYutaka Kubota (1 patent)Yahiko KumaiKenichi Inukai (1 patent)Yahiko KumaiNobuya Tanai (1 patent)Yahiko KumaiShoichi Fujiyoshi (1 patent)Yahiko KumaiKentaro Asakura (1 patent)Yahiko KumaiShouichi Fujiyoshi (1 patent)Yahiko KumaiAtsushi Ikeuchi (1 patent)Yahiko KumaiYahiko Kumai (37 patents)Daichi KimuraDaichi Kimura (27 patents)Tomonori MatsumotoTomonori Matsumoto (46 patents)Tatsuya TakeiTatsuya Takei (29 patents)Hiroyuki TadaHiroyuki Tada (50 patents)Kouichi SugaKouichi Suga (6 patents)Kenji KidoKenji Kido (53 patents)Yo HirutaYo Hiruta (4 patents)Tokiko GamouTokiko Gamou (16 patents)Ken NagasakaKen Nagasaka (11 patents)Yukinobu MoriokaYukinobu Morioka (14 patents)Tsuyoshi KawashimaTsuyoshi Kawashima (10 patents)Tetsu EndohTetsu Endoh (13 patents)Yutaka KubotaYutaka Kubota (8 patents)Kenichi InukaiKenichi Inukai (8 patents)Nobuya TanaiNobuya Tanai (5 patents)Shoichi FujiyoshiShoichi Fujiyoshi (3 patents)Kentaro AsakuraKentaro Asakura (3 patents)Shouichi FujiyoshiShouichi Fujiyoshi (2 patents)Atsushi IkeuchiAtsushi Ikeuchi (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Toyota Jidosha Kabushiki Kaisha (37 from 36,713 patents)


37 patents:

1. D870607 - Motor vehicle and/or toy replica thereof

2. D870595 - Motor vehicle and/or toy replica thereof

3. D867235 - Rear bumper for an automobile

4. D867634 - Rear combination lamp for an automobile

5. D862314 - Front bumper for an automobile

6. D862315 - Rear bumper for an automobile

7. D861548 - Rear end portion of a motor vehicle and/or toy replica thereof

8. D856553 - Rear combination lamp for an automobile

9. D855845 - Front combination lamp for an automobile

10. D655228 - Motor vehicle and/or toy replica thereof

11. D655229 - Motor vehicle and/or toy replica thereof

12. D654410 - Motor vehicle and/or toy replica thereof

13. D654399 - Motor vehicle and/or toy replica thereof

14. D645803 - Fender for an automobile

15. D645800 - Hood for an automobile

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1/3/2026
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