Growing community of inventors

Osaka, Japan

Kenzou Kassai

Average Co-Inventor Count = 1.17

ph-index = 31

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 = 3,367

Kenzou KassaiIchiro Ohnishi (15 patents)Kenzou KassaiIchiro Onishi (11 patents)Kenzou KassaiHiroyasu Yamamoto (8 patents)Kenzou KassaiKeiji Inoue (7 patents)Kenzou KassaiMiyuki Nishikura (3 patents)Kenzou KassaiYoshifumi Yoneda (2 patents)Kenzou KassaiFumiko Takahashi (2 patents)Kenzou KassaiSachiyo Suzuki (2 patents)Kenzou KassaiAtsuyoshi Yoshida (2 patents)Kenzou KassaiHaruo Kawano (2 patents)Kenzou KassaiKazunori Sawada (1 patent)Kenzou KassaiToshio Oonuma (1 patent)Kenzou KassaiTsuguhiro Fukuda (1 patent)Kenzou KassaiMasaki Ito (1 patent)Kenzou KassaiFumiyo Yamazoe (1 patent)Kenzou KassaiYasuhito Kassai (1 patent)Kenzou KassaiKaichi Fujimoto (1 patent)Kenzou KassaiYuji Nitta (1 patent)Kenzou KassaiMakoto Fukui (1 patent)Kenzou KassaiKoichi Yokoyama (1 patent)Kenzou KassaiYamei Liu (1 patent)Kenzou KassaiKenzou Kassai (194 patents)Ichiro OhnishiIchiro Ohnishi (25 patents)Ichiro OnishiIchiro Onishi (20 patents)Hiroyasu YamamotoHiroyasu Yamamoto (8 patents)Keiji InoueKeiji Inoue (7 patents)Miyuki NishikuraMiyuki Nishikura (3 patents)Yoshifumi YonedaYoshifumi Yoneda (4 patents)Fumiko TakahashiFumiko Takahashi (2 patents)Sachiyo SuzukiSachiyo Suzuki (2 patents)Atsuyoshi YoshidaAtsuyoshi Yoshida (2 patents)Haruo KawanoHaruo Kawano (2 patents)Kazunori SawadaKazunori Sawada (6 patents)Toshio OonumaToshio Oonuma (1 patent)Tsuguhiro FukudaTsuguhiro Fukuda (1 patent)Masaki ItoMasaki Ito (1 patent)Fumiyo YamazoeFumiyo Yamazoe (1 patent)Yasuhito KassaiYasuhito Kassai (1 patent)Kaichi FujimotoKaichi Fujimoto (1 patent)Yuji NittaYuji Nitta (1 patent)Makoto FukuiMakoto Fukui (1 patent)Koichi YokoyamaKoichi Yokoyama (1 patent)Yamei LiuYamei Liu (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Aprica Kassai Kabushikikaisha (122 from 136 patents)

2. Kassai Kabushikikaisha (55 from 57 patents)

3. Aprica Ikujikenkyukai Aprica Kassai Kabushikikaisha (6 from 7 patents)

4. Other (4 from 831,952 patents)

5. Graco Children's Products, Inc. (3 from 379 patents)

6. Aprica Children's Products Inc. (2 from 11 patents)

7. Aprica Ikujikenkyukai Aprica Kassai Kabushikaisha (1 from 1 patent)


194 patents:

1. 7753445 - Automobile child seat

2. 7585026 - Seat of child-care instrument

3. 7493835 - Newborn dummy

4. 7494031 - Nursery band

5. 7484801 - Detachable child safety seat

6. 7458599 - Luggage basket and folding baby carriage provided with the same

7. D580307 - Baby carriage

8. 7445230 - Baby carriage

9. 7445281 - Head guard structure and head guard pad of child equipment, and vehicular child safety seat

10. 7419181 - Foldable carriage body for carrying a seat

11. 7204550 - Seat of childcare apparatus

12. 7175004 - Wheel simultaneous brake mechanism and caster rotation preventing mechanism having simple mechanism

13. 7140634 - Foldable baby carriage

14. 7118173 - Baby-care implement provided with hood

15. 7114743 - Foldable baby carriage

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9/10/2025
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