Inventor
TAKEDA RYUJI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “TAKEDA RYUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
THK CO LTD
5 patentsUS6571653B1Jun 3, 2003
Ball screw
THK CO LTD25 citations92
US6286383B1Sep 11, 2001
Ball screw device
THK CO LTD28 citations92
US6276225B1Aug 21, 2001
Ball screw assembly
THK CO LTD29 citations92
US6282971B1Sep 4, 2001
Ball screw
THK CO LTD20 citations91
US6089117AJul 18, 2000
Ball screw device
THK CO LTD47 citations91
SONY CORP
3 patentsUS6754154B1Jun 22, 2004
Optical disk driving apparatus, optical disk driving method and optical disk apparatus
SONY CORP21 citations90
US6341103B1Jan 22, 2002
Optical disk apparatus capable of correcting the drive current waveforms of stepping motor
SONY CORP27 citations90
US7336570B1Feb 26, 2008
Apparatus and method for adjusting the tilt angle of an optical pickup device
SONY CORP3 citations60