RK

Ryo Kasai

Canon: 82 patents #213 of 19,416Top 2%
SI Sumitomo Electric Device Innovations: 1 patents #123 of 208Top 60%
Overall (All Time): #20,800 of 4,157,543Top 1%
83
Patents All Time

Issued Patents All Time

Showing 76–83 of 83 patents

Patent #TitleCo-InventorsDate
7815272 Element body for recording head and recording head having element body Tatsuo Furukawa, Masataka Sakurai, Nobuyuki Hirayama 2010-10-19
7806495 Head substrate, printhead, head cartridge, and printing apparatus 2010-10-05
7802858 Element board for printhead, printhead and printhead control method 2010-09-28
7588304 Liquid discharge head substrate, liquid discharge head, and liquid discharge apparatus Masataka Sakurai 2009-09-15
7581797 Element board for printhead, printhead, printhead cartridge, and printing apparatus 2009-09-01
7559626 Inkjet recording head substrate and drive control method, inkjet recording head, inkjet recording head cartridge and inkjet recording apparatus Masataka Sakurai, Tatsuo Furukawa, Hidenori Watanabe, Nobuyuki Hirayama 2009-07-14
7354125 Element board for printhead, and printhead having the same Nobuyuki Hirayama, Masataka Sakurai 2008-04-08
7212276 Exposure apparatus 2007-05-01