Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Oxide cathode for an electron gun, having a denser and thinner emissive zone

Oxide cathode for an electron gun, having a denser and thinner emissive zone

US Patent 6917148 · Granted Jul 12, 2005

Estimated economic value: $398,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Electron gun for cathode-ray tube with improved beam shaping region2009
Low consumption cathode structure for cathode ray tubes2008
Cathode for cathode ray tube with improved lifetime2008
Cathode with optimized thermal efficiency2005
Oxide-coated cathode and method for making same2004
Method of assembling an emissive cathode for electron gun2004
Vacuum electronic tube with getter support structure1998
Television camera tube with spurious image black-out screen1993
Image pick-up electron tube with molded signal input plate and fabrication metho1992
Picture taking tube having a bias light device1989
Device for the insertion of cathodes in cathode tube guns, especially for the si1989
Device for correcting the deflection effect due to a variation of the focusing v1989