US3298936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of providing high temperature protective coatings
Assignee: North American Aviation Corp
•
Filing: 1961-04-17
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Granted: 1967-01-17
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Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 Harold J Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:53
CPC Classifications
C; C23; C23C; C23C28/00; C23C28/04; C23D; C23D3/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10S428/937; Y10S428/938; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A METHOD OF PROVIDING A WORKPIECE HAVING AN OXIDIZABLE METALLIC SURFACE WITH A HIGH-TEMPERATURE CERAMIC PROTECTIVE COATING, THE STEPS OF: PROVIDING SAID OXIDIZABLE SURFACE WITH AN ADHERING CONTINUOUS NICKEL STRIKE IN CONTACTING RELATION THERETO, AFTERWARDS PROVIDING A CONTINUOUS CHROMIUM STRIKE IN ADHERING AND CONTACTING RELATION TO SAID NICKEL STRIKE, AND THEN PROVIDING A HIGH-TEMPERATURE CERAMIC PROTECTIVE COATING IN ADHERING RELATION TO AND OVER SAID NICKEL AND CHROMIUM STRIKES, SAID HIGH-TEMPERATURE CERAMIC PROTECTIVE COATING BEING ADHERED TO SAID WORKPIECE BY FIRING IN AN AIR ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 1700* F. TO 2200*F. AND IN CONTACTING RELATION TO SAID CHROMIUM STRIKE.
Claim 2
Dependent Claim
105 words
IN A METHOD OF PROVIDING A WORKPIECE HAVING AN OXIDIZABLE METALLIC SURFACE WITH A HIGH-TEMPERATURE CERAMIC PROTECTIVE COATING, THE STEPS OF: PROVIDING SAID OXIDIZABLE SURFACE WITH AN ADHERING CONTINUOUS NICKEL STRIKE IN CONTACTING RELATION THERETO, AFTERWARDS PROVIDING A CONTINUOUS CHROMIUM STRIKE IN ADHERING AND CONTACTING RELATION TO SAID NICKEL STRIKE, AND THEN PROVIDING A HIGH-TEMPERATURE CERAMIC PROTECTIVE COATING IN ADHERING RELATION TO AND OVER SAID NICKEL AND CHROMIUM STRIKES, SAID HIGH-TEMPERATURE CERAMIC PROTECTIVE COATING BEING ADHERED TO SAID WORKPIECE BY FIRING IN AN AIR ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF APPROXIMATELY 1700* F. TO 2200*F. AND IN CONTACTING RELATION TO SAID CHROMIUM STRIKE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |