Inventor
KOMIYA TOSHIFUMI
JP11 patents
⚠️ This page may combine multiple inventors who share the name “KOMIYA TOSHIFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS5808404ASep 15, 1998
Electron tube including a cathode having an electron emissive material layer
HITACHI LTD19 citations91
US6504293B1Jan 7, 2003
Cathode ray tube having an improved cathode
HITACHI LTD11 citations72
US6366011B1Apr 2, 2002
Electron gun for cathode-ray tube for image display having an electrode with reduced electron beam passage hole and a cathode with an electron emissive layer mainly made of an oxide of an alkaline earth metal and containing an oxide of a rare earth metal
HITACHI LTD11 citations72
US6124667ASep 26, 2000
Electron gun for a cathode-ray tube for image display having an electrode with a reduced electron beam limiting hole and a cathode with an electron emissive layer mainly made of an oxide of an alkaline metal and containing an oxide of a rare earth metal
HITACHI LTD6 citations72
US6614147B2Sep 2, 2003
Cathode ray tube having an improved indirectly heated cathode structure
HITACHI LTD2 citations61
US6552479B2Apr 22, 2003
Cathode ray tube having an improved heater
HITACHI LTD5 citations61
US6531813B1Mar 11, 2003
Cathode ray tube having an improved cathode structure
HITACHI LTD2 citations61
US6130499AOct 10, 2000
Cathode ray tube having an improved cathode structure
HITACHI LTD2 citations61