Growing community of inventors

Miyagi, Japan

Masashi Oi

Average Co-Inventor Count = 4.00

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 = 2

Masashi OiNaoki Sato (1 patent)Masashi OiMasae Sugawara (1 patent)Masashi OiKeiichi Sugai (1 patent)Masashi OiMasashi Oi (1 patent)Naoki SatoNaoki Sato (44 patents)Masae SugawaraMasae Sugawara (10 patents)Keiichi SugaiKeiichi Sugai (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ricoh Company, Ltd. (1 from 28,595 patents)


1 patent:

1. 7496312 - Auxiliary power supply unit and image forming apparatus

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1/14/2026
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