MH

Makoto Hirakawa

Ricoh Company: 46 patents #272 of 9,818Top 3%
TC Toagosei Co.: 5 patents #30 of 338Top 9%
SC Sumitomo Precision Products Co.: 3 patents #24 of 199Top 15%
Mitsubishi Electric: 2 patents #11,187 of 25,717Top 45%
Overall (All Time): #43,700 of 4,157,543Top 2%
56
Patents All Time

Issued Patents All Time

Showing 51–56 of 56 patents

Patent #TitleCo-InventorsDate
7623280 Optical scanning device and image forming apparatus Yoshinori Hayashi, Daisuke Ichii 2009-11-24
7551337 Optical scanning apparatus and image forming apparatus Naoki Miyatake 2009-06-23
7385181 Optical scanning device and image forming device Naoki Miyatake 2008-06-10
7079326 Zoom lens, camera, and portable information terminal apparatus 2006-07-18
6829102 Zoom lens, and camera and portable information terminal for utilizing zoom lens Kazuyasu Ohashi 2004-12-07
6804064 Zoom lens, camera, and portable information terminal apparatus 2004-10-12