Growing community of inventors

Shizuoka, Japan

Heiji Maruyama

Average Co-Inventor Count = 6.00

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 = 0

Heiji MaruyamaYoshikazu Honji (2 patents)Heiji MaruyamaHirofumi Onitsuka (2 patents)Heiji MaruyamaYasuyuki Suzuki (2 patents)Heiji MaruyamaYosuke Kuno (2 patents)Heiji MaruyamaHideki Osawa (2 patents)Heiji MaruyamaHeiji Maruyama (2 patents)Yoshikazu HonjiYoshikazu Honji (24 patents)Hirofumi OnitsukaHirofumi Onitsuka (21 patents)Yasuyuki SuzukiYasuyuki Suzuki (5 patents)Yosuke KunoYosuke Kuno (2 patents)Hideki OsawaHideki Osawa (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yamaha Corporation (2 from 5,452 patents)

2. Yamaha Hatsudoki Kabushiki Kaisha (2 from 4,244 patents)


2 patents:

1. 9479851 - Vehicle sound generation apparatus, and vehicle sound generation method

2. 9327644 - Sound generating device for vehicle, and sound generating method for vehicle

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as of
1/9/2026
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