Growing community of inventors

Fukushima, Japan

Shunji Usui

Average Co-Inventor Count = 1.00

ph-index = 3

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 = 19

Shunji UsuiShunji Usui (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Nippon Columbia Co., Ltd. (2 from 44 patents)

2. Denon, Ltd. (1 from 20 patents)


3 patents:

1. 6754150 - Contents data reproducing apparatus

2. 6434100 - Optical disc reproducing apparatus

3. 6058079 - Optical disc reproducing apparatus for pre-reading recording data to be

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