Growing community of inventors

Tokyo, Japan

Tatuo Kusumi

Average Co-Inventor Count = 2.00

ph-index = 3

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 = 25

Tatuo KusumiIwakichi Ogawa (3 patents)Tatuo KusumiTatuo Kusumi (3 patents)Iwakichi OgawaIwakichi Ogawa (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sega Tech Ltd. (3 from 3 patents)


3 patents:

1. 6575809 - Running toy system

2. 6343972 - Running toy system

3. 6179686 - Running toy system

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idiyas.com
as of
12/19/2025
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