US3240569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode base structure
Assignee: GTE Sylvania Inc
•
Filing: 1964-08-21
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Granted: 1966-03-15
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Expires: 1984-08-21
Abstract
No abstract record available.
Inventors
- 👤 William E Buescher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:29
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/13; H01J1/20; H01J1/26; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12611; Y10T428/12618; Y10T428/12771; Y10T428/12861; Y10T428/12944; Y10T428/12986
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A CATHODE BASE STRUCTURE ADAPTED TO BE EMPLOYED WITH AN OXIDE CONTAINING ELECTRON EMISSIVE COATING HAVING A PLURALITY OF LAMINA COMPRISING IN ORDER, AN OUTER LAMINA CONSISTING ESSENTIALLY OF NICKEL FORMED TO RECEIVE THE EMISSIVE COATING, AN ADHERENT NEXT ADJACENT LAMINA OF ACTIVE CATHODE BARE METAL FORMED TO REDUCE THE OXIDE EMISSIVE COATING, AN ADHERENT NEXT ADJACENT HIGH TEMPERATURE STRENGTH METAL LAMINA, AND AN ADHERENT NEXT ADJACENT LAMINA OF A NICKEL ALLOY HAVING A PREDOMINANT ALUMINUM ALLOYING CONSTITUENT, SAID ALLOY PROVIDING A NICKEL-ALUMINUM OXIDE INSULATING BARRIER UPON OXIDATION.
Claim 2
Dependent Claim
88 words
A CATHODE BASE STRUCTURE ADAPTED TO BE EMPLOYED WITH AN OXIDE CONTAINING ELECTRON EMISSIVE COATING HAVING A PLURALITY OF LAMINA COMPRISING IN ORDER, AN OUTER LAMINA CONSISTING ESSENTIALLY OF NICKEL FORMED TO RECEIVE THE EMISSIVE COATING, AN ADHERENT NEXT ADJACENT LAMINA OF ACTIVE CATHODE BARE METAL FORMED TO REDUCE THE OXIDE EMISSIVE COATING, AN ADHERENT NEXT ADJACENT HIGH TEMPERATURE STRENGTH METAL LAMINA, AND AN ADHERENT NEXT ADJACENT LAMINA OF A NICKEL ALLOY HAVING A PREDOMINANT ALUMINUM ALLOYING CONSTITUENT, SAID ALLOY PROVIDING A NICKEL-ALUMINUM OXIDE INSULATING BARRIER UPON OXIDATION.
References Cited (Backward Citations)
US2878410A
Cited
US3141744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |