US2874065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protection of ferrous metal parts against liquid molten aluminum
Assignee: Schwarzkopf Technologies Corp
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Filing: 1956-04-19
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Granted: 1959-02-17
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Expires: 1976-04-19
Abstract
No abstract record available.
Inventors
- 👤 Herz William
- 👤 Pipitz Egon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:49
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/10; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12937; Y10T428/26; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A PROCESS FOR PROTECTING THE SURFACE REGION OF A STRONG, SOLID, FERROUS METAL BODY SUCH AS THE SURFACE REGION OF A FERROUS METAL VESSEL, AGAINST REACTION WITH LIQUID ALUMINUM, THE PROCEDURE COMPRISING SPRAYING WITH A FLAME-SPRAY GUN HAVING A FLAME IN EXCESS OF 3000*C. THE CONTENTS OF A SINTERED SPRAY ROD WHICH IS BARE OF FREE NICKEL AND ORGANIC MATTER AND CONSISTS OF 7% TO 50% CR2NIB4 AND 93% TO 50% OF CRB2 AGAINST THE SURFACE REGION OF THE FERROUS BODY WHICH HAS BEEN PREVIOUSLY CLEANED AND ROUGHENED, AND THEREBY PROVIDING THE SURFACE OF SAID FERROUS BODY WITH AN ADHERENT CONTINUOUS COATING LAYER CONSISTING OF THE CONTENTS OF THE SPRAYED ROD.
Claim 2
Dependent Claim
112 words
IN A PROCESS FOR PROTECTING THE SURFACE REGION OF A STRONG, SOLID, FERROUS METAL BODY SUCH AS THE SURFACE REGION OF A FERROUS METAL VESSEL, AGAINST REACTION WITH LIQUID ALUMINUM, THE PROCEDURE COMPRISING SPRAYING WITH A FLAME-SPRAY GUN HAVING A FLAME IN EXCESS OF 3000*C. THE CONTENTS OF A SINTERED SPRAY ROD WHICH IS BARE OF FREE NICKEL AND ORGANIC MATTER AND CONSISTS OF 7% TO 50% CR2NIB4 AND 93% TO 50% OF CRB2 AGAINST THE SURFACE REGION OF THE FERROUS BODY WHICH HAS BEEN PREVIOUSLY CLEANED AND ROUGHENED, AND THEREBY PROVIDING THE SURFACE OF SAID FERROUS BODY WITH AN ADHERENT CONTINUOUS COATING LAYER CONSISTING OF THE CONTENTS OF THE SPRAYED ROD.
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) | 1962-02-16 | 1962-08-18 | 1963-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-16 | 1966-08-18 | 1967-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-16 | 1970-08-18 | 1971-02-17 | $7700.00 | Window Closed / Lapsed |