Inventor
SAKUMA SHIGERU
JP17 patents
⚠️ This page may combine multiple inventors who share the name “SAKUMA SHIGERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIKON CORP
9 patentsUS6201634B1Mar 13, 2001
Optical element made from fluoride single crystal, method for manufacturing optical element, method for calculating birefringence of optical element and method for determining direction of minimum birefringence of optical element
NIKON CORP132 citations97
US6782074B2Aug 24, 2004
Optical member for photolithography and method for evaluating the same
NIKON CORP28 citations92
US6061174AMay 9, 2000
Image-focusing optical system for ultraviolet laser
NIKON CORP32 citations92
US6411384B2Jun 25, 2002
Optical element made from fluoride single crystal, method for manufacturing optical element, method for calculating birefringence of optical element and method for determining direction of minimum birefringence of optical element
NIKON CORP28 citations91
US6377332B1Apr 23, 2002
Optical member for photolithography and photolithography apparatus
NIKON CORP28 citations91
US6332922B1Dec 25, 2001
Manufacturing method for calcium fluoride and calcium fluoride for photolithography
NIKON CORP37 citations91
US6811606B2Nov 2, 2004
Manufacturing method for calcium fluoride and calcium fluoride for photolithography
NIKON CORP7 citations72
US5978070ANov 2, 1999
Projection exposure apparatus
NIKON CORP15 citations72
US6994747B2Feb 7, 2006
Method for producing optical member
NIKON CORP9 citations70
NEC CORP
6 patentsUS6317605B1Nov 13, 2001
Mobile communications system
NEC CORP97 citations97
US6847628B1Jan 25, 2005
High throughput TDMA/TDD diversity communication by assembling time slots into downlink burst groups corresponding to selected antennas
NEC CORP22 citations92
US6671331B1Dec 30, 2003
Carrier detecting circuit for detecting the level of a received signal and communication apparatus
NEC CORP42 citations92
US6639909B1Oct 28, 2003
Receiver having functions for cancelling DC offset and measuring carrier detection threshold value, and control method thereof
NEC CORP16 citations84
US6212371B1Apr 3, 2001
Mobile wireless terminal and power controlling method
NEC CORP15 citations84
US5940405AAug 17, 1999
High-speed two-way multiplex data communication system and data communication device used therein
NEC CORP6 citations62