JK

Junzo Kumakura

SO Sony: 8 patents #5,352 of 25,231Top 25%
Overall (All Time): #660,793 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7020059 Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up Yasuo Osada, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama 2006-03-28
7012868 Adjustment optical disc for optical pick-up, adjustment method for optical pick-up, and adjustment apparatus for optical pick-up Yasuo Osada, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama 2006-03-14
7006410 Optical disk for adjusting optical pickup, method for adjusting optical pickup, and device for adjusting optical pickup Yasuo Osada, Hideo Nagasaka, Shuichi Hirosawa, Yoshihiro Kajiyama 2006-02-28
6430143 Optical pickup device and optical disc recording and/or reproducing apparatus Yoshihiro Kajiyama, Yasuo Osada, Toshiyuki Kuroiwa, Hideo Nagasaka, Kaneshiro Kondo +5 more 2002-08-06
6396794 Disc recording and/or reproducing devices with disc exchanging function Tàkashi Tsugami, Akihisa Inatani 2002-05-28
6118618 Disk cartridge loading device for recording and/or reproducing apparatus 2000-09-12
5384760 Disk changer player with stocker between loading/unloading position and reproducing unit 1995-01-24
5301177 Device for simultaneously loading two different kinds of recording media 1994-04-05