Growing community of inventors

Hamamatsu, Japan

Fumihiko Ojima

Average Co-Inventor Count = 1.33

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 = 9

Fumihiko OjimaHiroyuki Toda (1 patent)Fumihiko OjimaFumihiko Ojima (2 patents)Hiroyuki TodaHiroyuki Toda (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Yamaha Corporation (2 from 5,451 patents)


2 patents:

1. 5347082 - Automatic musical playing instrument having playing order control

2. 5153362 - Electronic musical instrument having pan control function

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idiyas.com
as of
12/20/2025
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