Growing community of inventors

Higashiosaka, Japan

Keiko Tsunashima

Average Co-Inventor Count = 1.33

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 = 7

Keiko TsunashimaMakoto Shinya (1 patent)Keiko TsunashimaKeiko Tsunashima (2 patents)Makoto ShinyaMakoto Shinya (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yamamoto Kogaku Co., Ltd. (2 from 120 patents)


2 patents:

1. 9301578 - Belt length adjuster

2. D620967 - Swimming goggles

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as of
12/14/2025
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