Growing community of inventors

Tokyo, Japan

Iwakichi Ogawa

Average Co-Inventor Count = 2.00

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 = 182

Iwakichi OgawaTatuo Kusumi (3 patents)Iwakichi OgawaAkira Takasaka (2 patents)Iwakichi OgawaIwakichi Ogawa (5 patents)Tatuo KusumiTatuo Kusumi (3 patents)Akira TakasakaAkira Takasaka (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

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

2. Sega Enterprises, Ltd. (2 from 264 patents)


5 patents:

1. 6575809 - Running toy system

2. 6343972 - Running toy system

3. 6244960 - Tablet unit and virtual experience method

4. 6179686 - Running toy system

5. 5967898 - Tablet unit

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as of
12/18/2025
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