Growing community of inventors

Fukushima-ken, Japan

Takefumi Osaka

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 = 1

Takefumi OsakaZenko Motoki (2 patents)Takefumi OsakaYoshibumi Abe (2 patents)Takefumi OsakaTakahito Maruyama (1 patent)Takefumi OsakaYuji Inada (1 patent)Takefumi OsakaMasaki Saito (1 patent)Takefumi OsakaTakefumi Osaka (2 patents)Zenko MotokiZenko Motoki (13 patents)Yoshibumi AbeYoshibumi Abe (12 patents)Takahito MaruyamaTakahito Maruyama (16 patents)Yuji InadaYuji Inada (7 patents)Masaki SaitoMasaki Saito (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Alps Electric Co., Ltd. (2 from 4,048 patents)


2 patents:

1. 7654528 - Sheet feed mechanism

2. 7594656 - Paper feed mechanism

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as of
1/23/2026
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