Inventor
YOKOYAMA MASAFUMI
JP22 patents
⚠️ This page may combine multiple inventors who share the name “YOKOYAMA MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CITIZEN WATCH CO LTD
7 patentsUS6366338B1Apr 2, 2002
Line-scanning optical printer
CITIZEN WATCH CO LTD16 citations83
US6262757B1Jul 17, 2001
Optical printer
CITIZEN WATCH CO LTD9 citations71
US7015446B2Mar 21, 2006
Light source for an optical apparatus in which the amount of light emission is controlled at a constant level
CITIZEN WATCH CO LTD1 citations51
US6275247B1Aug 14, 2001
Optical printer apparatus
CITIZEN WATCH CO LTD1 citations50
US9772484B2Sep 26, 2017
Light modulating device
CITIZEN WATCH CO LTD0 citations41
US6720986B2Apr 13, 2004
Optical printer device that forms color images
CITIZEN WATCH CO LTD0 citations41
US6445403B1Sep 3, 2002
Optical printer
CITIZEN WATCH CO LTD0 citations41
CITIZEN HOLDINGS CO LTD
5 patentsUS7884545B2Feb 8, 2011
LED light source and method for adjusting chromaticity of LED light source
CITIZEN HOLDINGS CO LTD6 citations73
US7570388B2Aug 4, 2009
Exposure device
CITIZEN HOLDINGS CO LTD2 citations62
US7349003B2Mar 25, 2008
Method for determining a correction value for light-emitting parts in exposure apparatus
CITIZEN HOLDINGS CO LTD4 citations61
US9594238B2Mar 14, 2017
Aberration correction device and laser microscope
CITIZEN HOLDINGS CO LTD0 citations41
US7271798B2Sep 18, 2007
Liquid crystal exposure device
CITIZEN HOLDINGS CO LTD0 citations41