Growing community of inventors

Kyoto, Japan

Hiroshi Rikimaru

Average Co-Inventor Count = 1.20

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 = 12

Hiroshi RikimaruShinichi Sakamoto (1 patent)Hiroshi RikimaruTakeshi Nakaichi (1 patent)Hiroshi RikimaruHiroshi Rikimaru (4 patents)Shinichi SakamotoShinichi Sakamoto (23 patents)Takeshi NakaichiTakeshi Nakaichi (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (3 from 832,966 patents)

2. Rion Company Ltd. (2 from 85 patents)


4 patents:

1. 8057234 - Foreign language learning apparatus

2. 7729907 - Apparatus and method for preventing senility

3. 7502483 - Hearing aid, training device, game device, and audio output device

4. 7421392 - Diagnosis device and diagnosis method

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1/14/2026
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