US3029360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater wire coating process
Assignee: RCA Corp
•
Filing: 1958-04-29
•
Granted: 1962-04-10
•
Expires: 1978-04-29
Abstract
No abstract record available.
Inventors
- 👤 Robert W Etter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:46
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20; H01J1/22; H01B; H01B3/00; H01B3/02; H05; H05B; H05B3/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2916; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A SUBASSEMBLY FOR AN ELECTRON DISCHARGE DEVICE COMPRISING AN ELECTRON EMISSIVE CATHODE, A HEATER FOR SAID CATHODE COMPRISING A CONDUCTIVE MEANS HAVING AN ELECTRICALLY INSULATING COATING THEREON, SAID INSULATING COATING INCLUDING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM OXIDE AND BORON OXIDEM SAID INSULATING COATING FURTHER INCLUDING OXIDES OF AT LEAST TWO DIFFERENT MATERIALS SELECTED FROM THE GROUP OF MATERIALS CONSISTING OF TITANIUM, VANADIUM, CHROMIUM, MANGANESE, IRON, COBALT, NICKEL, ZIRCONIUM, MOLYBDENUM, RHODIUM, TUNGSTEN AND TANTALUM,
Claim 2
Dependent Claim
77 words
A SUBASSEMBLY FOR AN ELECTRON DISCHARGE DEVICE COMPRISING AN ELECTRON EMISSIVE CATHODE, A HEATER FOR SAID CATHODE COMPRISING A CONDUCTIVE MEANS HAVING AN ELECTRICALLY INSULATING COATING THEREON, SAID INSULATING COATING INCLUDING A MATERIAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM OXIDE AND BORON OXIDEM SAID INSULATING COATING FURTHER INCLUDING OXIDES OF AT LEAST TWO DIFFERENT MATERIALS SELECTED FROM THE GROUP OF MATERIALS CONSISTING OF TITANIUM, VANADIUM, CHROMIUM, MANGANESE, IRON, COBALT, NICKEL, ZIRCONIUM, MOLYBDENUM, RHODIUM, TUNGSTEN AND TANTALUM,
References Cited (Backward Citations)
US2524601A
Cited
US2685528A
Cited
US2321439A
Cited
US2346654A
Cited
US2436907A
Cited
US2529914A
Cited
US2753480A
Cited
US2800560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |