Patent US2904449A successfully refreshed from Google Patents.
US2904449A
Expired / Lapsed
US
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Method and compositions for flame spraying
Assignee: IIT Research Institute
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Filing: 1955-07-26
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Granted: 1959-09-15
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Expires: 1975-07-26
Abstract
No abstract record available.
Inventors
- 👤 Samuel W Bradstreet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:59
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/12; C23C4/129; C23C4/04; C23C4/10; C23C4/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF APPLYING AN ADHERENT REFRACTORY COATING ONTO A SURFACE, WHICH COMPRISES INJECTING SOLID CRYSTALLINE PARTICLES OF AN OXYGEN-CONTAINING MATERIAL WHICH MATERIAL IS REFRACTORY AT 1200* C. INTO A GASEOUS STREAM BEING FED INTO A CONTINUOUS FLAME GENERATING DEVICE, MAINTAINING THE FLAME TEMPERATURE AND RESIDENCE TIME OF SAID PARTICLES IN SAID FLAME AT A VALUE TO HEAT THE PARTICLES TO SINTERING TEMPERATURE IN THE FLAME, AND IMPINGING THE HOT PARTICLES ON THE SURFACE TO FORM A CRYSTALLINE DEPOSIT OF THE RESULTING SINTERED PARTICLES AS AN ADHERENT COATING ON SAID SURFACE.
Claim 2
Independent Claim
91 words
THE METHOD OF APPLYING AN ADHERENT REFRACTORY COATING ONTO A SURFACE, WHICH COMPRISES INJECTING SOLID CRYSTALLINE PARTICLES OF AN OXYGEN-CONTAINING MATERIAL WHICH MATERIAL IS REFRACTORY AT 1200* C. INTO A GASEOUS STREAM BEING FED INTO A CONTINUOUS FLAME GENERATING DEVICE, MAINTAINING THE FLAME TEMPERATURE AND RESIDENCE TIME OF SAID PARTICLES IN SAID FLAME AT A VALUE TO HEAT THE PARTICLES TO SINTERING TEMPERATURE IN THE FLAME, AND IMPINGING THE HOT PARTICLES ON THE SURFACE TO FORM A CRYSTALLINE DEPOSIT OF THE RESULTING SINTERED PARTICLES AS AN ADHERENT COATING ON SAID SURFACE.
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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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |