Growing community of inventors

Tokyo, Japan

Wakana Yamana

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 5

Wakana Yamana ↔ Nobuaki Ishida (1 patent)Wakana YamanaWakana Yamana (1 patent)Nobuaki IshidaNobuaki Ishida (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sega Toys, Ltd. (1 from 5 patents)


1 patent:

1. D461845 - Educational illustration machine

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as of
12/11/2025
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