Patent US2536673A successfully refreshed from Google Patents.
US2536673A
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Zirconium coating for electron discharge devices
Assignee: RCA Corp
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Filing: 1948-02-25
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Granted: 1951-01-02
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Expires: 1968-02-25
Abstract
No abstract record available.
Inventors
- 👤 Emil G Widell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:12
CPC Classifications
H; H01; H01J; H01J7/00; H01J7/14; H01J7/18; H01J7/183; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; H01J2893/0023; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12139; Y10T428/12493; Y10T428/12771; Y10T428/12806
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
AN ELECTRODE FOR AN ELECTRON DISCHARGE DEVICE COMPRISING A STRUCTURE HAVING THEREON A COATING OF GOOD HEAT DISSIPATING, ADHERING AND GETTERING CHARACTERISTICS, SAID COATING COMPRISING A MIXTURE OF FROM 1 TO 19 PARTS OF ZIRCONIUM PARTICLES AND ONE PART OF ZIRCONIUM OXIDE PARTICLES, SAID COATING HAVING A SURFACE ADJACENT SAID STRUCTURE CONSISTING OF A PLURALITY OF SAID ZIRCONIUM PARTICLES SEPARATED BY SAID ZIRCONIUM OXIDE PARTICLES, SOME OF SAID ZIRCONIUM PARTICLES IN SAID SURFACE BEING SINTERED TO SAID STRUCTURE, WHEREBY SAID COATING IS FIRMLY ADHERENT TO SAID STRUCTURE AND IS FREE FROM EXCESSIVE ALLOYING THEREWITH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |