Growing community of inventors

Tokyo, Japan

Kei Nishizawa

Average Co-Inventor Count = 2.31

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 = 27

Kei Nishizawa ↔ Douglas Arthur Schultheis (5 patents)Kei Nishizawa ↔ Hiroyuki Matsukawa (3 patents)Kei Nishizawa ↔ Makoto Muraki (2 patents)Kei Nishizawa ↔ Lily Liu (2 patents)Kei Nishizawa ↔ Toshinobu Ishii (1 patent)Kei Nishizawa ↔ Takeaki Maeda (1 patent)Kei Nishizawa ↔ Masahiro Dohi (1 patent)Kei Nishizawa ↔ Shin Young Hong (1 patent)Kei NishizawaKei Nishizawa (10 patents)Douglas Arthur SchultheisDouglas Arthur Schultheis (47 patents)Hiroyuki MatsukawaHiroyuki Matsukawa (80 patents)Makoto MurakiMakoto Muraki (74 patents)Lily LiuLily Liu (2 patents)Toshinobu IshiiToshinobu Ishii (27 patents)Takeaki MaedaTakeaki Maeda (18 patents)Masahiro DohiMasahiro Dohi (5 patents)Shin Young HongShin Young Hong (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tomy Company, Ltd. (10 from 576 patents)


10 patents:

1. D1096975 - Accessory for spinning top toy

2. D1091720 - Spinning top toy

3. D1072958 - Launching apparatus for spinning top toy

4. 12285698 - Top launching device

5. D1068951 - Accessory for spinning top toy

6. D1068936 - Playing surface for spinning top toy

7. D1046991 - Launching apparatus for spinning top toy

8. D1046973 - Playing surface for spinning top toy

9. D1045997 - Playing surface for spinning toy

10. D838761 - Camera

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idiyas.com
as of
12/13/2025
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