Inventor
KUMASAKA OSAMU
JP11 patents
⚠️ This page may combine multiple inventors who share the name “KUMASAKA OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER CORP
6 patentsUS6650611B1Nov 18, 2003
Master disc manufacturing apparatus
PIONEER CORP21 citations91
US7663124B2Feb 16, 2010
Beam recording method and device
PIONEER CORP8 citations82
US7336585B2Feb 26, 2008
Information recording apparatus and method for recording information and information recording medium
PIONEER CORP8 citations72
US7203144B2Apr 10, 2007
Information recording apparatus and method for recording information patterns with a deflecting beam irradiated to a recording medium
PIONEER CORP9 citations72
US6686597B2Feb 3, 2004
Substrate rotating device, and manufacturing method and apparatus of recording medium master
PIONEER CORP10 citations72
US7486011B2Feb 3, 2009
Thread-type electron emission element
PIONEER CORP0 citations51
PIONEER ELECTRONIC CORP
4 patentsUS4894260AJan 16, 1990
Electroless plating method and apparatus
PIONEER ELECTRONIC CORP52 citations91
US4983815AJan 8, 1991
Method of identifying stamper for optical information storage disk
PIONEER ELECTRONIC CORP20 citations81
US4732844AMar 22, 1988
Method for manufacturing optical disk with address and guide grooves
PIONEER ELECTRONIC CORP13 citations72
US5015338AMay 14, 1991
Method of manufacturing a stamper for formation of optical information carrying disk
PIONEER ELECTRONIC CORP16 citations67