RK

Ryoji Katsuma

SE Seiko Epson: 11 patents #1,668 of 7,774Top 25%
Overall (All Time): #465,645 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
8477421 Screen 2013-07-02
8405905 Screen Akira Shinbo 2013-03-26
8228603 Screen and projector Akira Shinbo 2012-07-24
8197926 Screen Akira Shinbo 2012-06-12
8169700 Reflective screen Akira Shinbo 2012-05-01
8169697 Screen unit 2012-05-01
8023186 Screen Akira Shinbo, Toshiaki Hashizume 2011-09-20
7948679 Screen and projector Akira Shinbo 2011-05-24
7911694 Screen Akira Shinbo 2011-03-22
7188973 Optical image projector and light source device for optical image projector 2007-03-13
7052147 Light source, and projector provided with the light source Motoyuki Fujimori 2006-05-30