Patent US2903375A successfully refreshed from Google Patents.
US2903375A
Expired / Lapsed
US
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Method of coating a mould for use in a foundry
Assignee: Renault SA
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Filing: 1957-07-09
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Granted: 1959-09-08
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Expires: 1977-07-09
Abstract
No abstract record available.
Inventors
- 👤 Peras Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:34
CPC Classifications
B; B22; B22C; B22C23/00; B22C23/02; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/1266; Y10T428/12667; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12972
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD OF PROTECTING THE SURFACES OF METALLIC MOULDS FOR CASTING METALS AND ALLOYS, WHICH COMPRISES THE APPLICATION IN SUCCESSION TO SAID SURFACES BEFORE SAID MOULDS ARE PUT IN SERVICE, OF A PLURALITY OF COATINGS INCLUDING A FIRST COATING AND A LAST OATING, WITH SAID LAST COATING COMPRISING A CERMET CONTAINING 50 TO 90% OF ALUMINA AND 10 TO 50% OF METAL COMPNENT CONTAINING 70 TO 100% CHROMIUM AND SAID FRIST COATING BEING DIFFERENT FROM SAID LAST COATING AND COMPRISING AN ALLOY CONTAINING AT LEAST 15% CHROMIUM, SAID FIRST AND SAID LAST COATINGS BEING APPLIED BY PROJECTION IN MOLTEN FORM.
Claim 2
Independent Claim
100 words
A METHOD OF PROTECTING THE SURFACES OF METALLIC MOULDS FOR CASTING METALS AND ALLOYS, WHICH COMPRISES THE APPLICATION IN SUCCESSION TO SAID SURFACES BEFORE SAID MOULDS ARE PUT IN SERVICE, OF A PLURALITY OF COATINGS INCLUDING A FIRST COATING AND A LAST OATING, WITH SAID LAST COATING COMPRISING A CERMET CONTAINING 50 TO 90% OF ALUMINA AND 10 TO 50% OF METAL COMPNENT CONTAINING 70 TO 100% CHROMIUM AND SAID FRIST COATING BEING DIFFERENT FROM SAID LAST COATING AND COMPRISING AN ALLOY CONTAINING AT LEAST 15% CHROMIUM, SAID FIRST AND SAID LAST COATINGS BEING APPLIED BY PROJECTION IN MOLTEN FORM.
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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |