Growing community of inventors

Tokyo, Japan

Hiroyuki Isono

Average Co-Inventor Count = 1.20

ph-index = 3

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 = 210

Hiroyuki IsonoMutsuo Kurosawa (1 patent)Hiroyuki IsonoHiroyuki Isono (3 patents)Mutsuo KurosawaMutsuo Kurosawa (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tachikawa Spring Co., Ltd. (3 from 111 patents)


3 patents:

1. 4856844 - Cushioning body of a seat for vehicles

2. 4592588 - Vehicle seat

3. 4589695 - Vehicle seat

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as of
1/21/2026
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