Growing community of inventors

Hiroshima, Japan

Isao Hirayama

Average Co-Inventor Count = 2.57

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 = 15

Isao HirayamaNoriaki Haba (2 patents)Isao HirayamaNaohiro Yamaguchi (1 patent)Isao HirayamaDaisuke Yamada (1 patent)Isao HirayamaTomoatsu Tani (1 patent)Isao HirayamaIsao Hirayama (3 patents)Noriaki HabaNoriaki Haba (2 patents)Naohiro YamaguchiNaohiro Yamaguchi (15 patents)Daisuke YamadaDaisuke Yamada (2 patents)Tomoatsu TaniTomoatsu Tani (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mazda Motor Corporation (3 from 4,683 patents)

2. Ashimori Industry Co., Ltd. (1 from 148 patents)


3 patents:

1. 8393664 - Rear baggage-compartment structure of vehicle

2. 8011711 - Tonneau cover device for vehicle

3. 7673921 - Tonneau cover device of vehicle

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as of
1/9/2026
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