US2823139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of increasing the scaling resistance of metallic objects
Assignee: Vereinigte Deutsche Metallwerke AG
•
Filing: 1953-05-18
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Granted: 1958-02-11
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Schulze Herbert
- 👤 Schriewer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:19
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C4/04; C23C4/06; C23C4/08; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12583; Y10T428/1259; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917; Y10T428/12951; Y10T428/12958; Y10T428/12972
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF IMPROVING THE SCALING RESISTANCE AT TEMPERATURES ABOVE 800*C. IN THE PRESENCE OF CORROSIVE GASES OF A METAL ARTICLE COATED WITH A SCALING RESISTANT CHROMIUM-AND-NICKEL CONTAINING ALLOY WHICH COMPRISES APPLYING TO SAID COATED METAL ARTICLE A COATING CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM OXIDE, ALUMINUM OXIDE, LITHIUM OXIDE, LITHIUM HYDROXIDE AND LITHIUM CARBONATE.
Claim 2
Independent Claim
61 words
A METHOD OF IMPROVING THE SCALING RESISTANCE AT TEMPERATURES ABOVE 800*C. IN THE PRESENCE OF CORROSIVE GASES OF A METAL ARTICLE COATED WITH A SCALING RESISTANT CHROMIUM-AND-NICKEL CONTAINING ALLOY WHICH COMPRISES APPLYING TO SAID COATED METAL ARTICLE A COATING CONSISTING ESSENTIALLY OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM OXIDE, ALUMINUM OXIDE, LITHIUM OXIDE, LITHIUM HYDROXIDE AND LITHIUM CARBONATE.
References Cited (Backward Citations)
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Cited
US1896041A
Cited
US2300400A
Cited
US2457515A
Cited
US2730458A
Cited
US2697670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |