Growing community of inventors

Shizuoka, Japan

Hiroyuki Isashi

Average Co-Inventor Count = 1.00

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

Hiroyuki IsashiHiroyuki Isashi (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Kawai Gakki Seisakusho Co., Ltd. (2 from 8 patents)


2 patents:

1. 4827826 - Piano toy type musical instrument

2. 4794840 - Piano type musical instrument

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idiyas.com
as of
12/12/2025
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