Growing community of inventors

Kawagoe, Japan

Yoshio Maruyama

Average Co-Inventor Count = 5.00

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 = 31

Yoshio MaruyamaYoshiharu Ueki (2 patents)Yoshio MaruyamaAkihiro Fushimi (2 patents)Yoshio MaruyamaYoshihiro Magata (2 patents)Yoshio MaruyamaKatsuhisa Shimizu (2 patents)Yoshio MaruyamaYoshio Maruyama (2 patents)Yoshiharu UekiYoshiharu Ueki (25 patents)Akihiro FushimiAkihiro Fushimi (6 patents)Yoshihiro MagataYoshihiro Magata (6 patents)Katsuhisa ShimizuKatsuhisa Shimizu (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pioneer Electronic Corporation (2 from 2,861 patents)


2 patents:

1. 3936877 - Tape transport apparatus for cassette type tape recorder

2. 3932890 - Device for eliminating tape slack in a magnetic tape recording and

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as of
1/5/2026
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