Inventor
KOSAKA HIDEO
JP19 patents
⚠️ This page may combine multiple inventors who share the name “KOSAKA HIDEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
9 patentsUS5778018AJul 7, 1998
VCSELs (vertical-cavity surface emitting lasers) and VCSEL-based devices
NEC CORP131 citations98
US6154479ANov 28, 2000
VCSELs (vertical-cavity surface emitting lasers) and VCSEL-based devices
NEC CORP74 citations96
US6317554B1Nov 13, 2001
Self-waveguide optical circuit
NEC CORP70 citations95
US6381389B1Apr 30, 2002
Optical coupling device and optical coupling method using photonic crystal
NEC CORP24 citations92
US6188819B1Feb 13, 2001
Wavelength dividing circuit
NEC CORP46 citations92
US5600748AFeb 4, 1997
Optical cross-coupling apparatus
NEC CORP37 citations92
US5361273ANov 1, 1994
Semiconductor optical surface transmission device
NEC CORP35 citations92
US5293393AMar 8, 1994
Vertical-to-surface transmission electrophotonic device
NEC CORP27 citations92
US5229627AJul 20, 1993
Vertical cavity type vertical to surface transmission electrophotonic device
NEC CORP42 citations92
SONY CORP
3 patentsUS11186420B2Nov 30, 2021
Signal processing device, seal breakage detecting module, program, seal breakage detecting method, and article packing element
SONY CORP2 citations73
US6426895B2Jul 30, 2002
Memory system and programming method thereof
SONY CORP5 citations62
US9864723B2Jan 9, 2018
Information-processing apparatus, information-processing method, and program
SONY CORP0 citations52