Growing community of inventors

Tayoma, Japan

Akio Shiina

Average Co-Inventor Count = 1.00

ph-index = 2

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 = 23

Akio ShiinaAkio Shiina (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Sente Creations Co., Ltd. (2 from 7 patents)


2 patents:

1. 5017171 - Toy utilizing bubbles in liquid

2. 4990118 - Toy utilizing bubbles in liquid

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as of
12/9/2025
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