US2752274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bright heat-treating metals
Assignee: Westinghouse Electric Corp
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Filing: 1953-11-12
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Granted: 1956-06-26
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Expires: 1973-11-12
Abstract
No abstract record available.
Inventors
- 👤 Edward A Fox
- 👤 Damon Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:49
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; C; C21; C21D; C21D1/00; C21D1/68; C21D1/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN THE METHOD OF HEAT-TREATING OXIDIZABLE METALS, THE STEPS COMPRISING COATING THE METAL WITH A LIQUID SILICONE POLYMER HAVING A RATIO OF FROM 1.8 TO 3.0 ORGANIC GROUPS PER SILICON ATOM, THE ORGANIC GROUPS BEING ATTACHED TO THE SILICON ATOMS BY CARBON SILICON LINKAGES, AND BEING SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF METHYL, ETHYL, AND PHENYL RADICALS, INTRODUCING THE COATED METAL INTO A HOT PURGING CHAMBER HAVING A NON-OXIDIZING ATMOSPHERE FLOWING THERETHROUGH IN SUCH MANNER AS TO REMOVE THE SILICONE COATING FROM THE METAL, AND THEREAFTER MOVING THE METAL INTO THE HEAT-TREATING ZONE OF A FURNACE.
Claim 2
Dependent Claim
100 words
IN THE METHOD OF HEAT-TREATING OXIDIZABLE METALS, THE STEPS COMPRISING COATING THE METAL WITH A LIQUID SILICONE POLYMER HAVING A RATIO OF FROM 1.8 TO 3.0 ORGANIC GROUPS PER SILICON ATOM, THE ORGANIC GROUPS BEING ATTACHED TO THE SILICON ATOMS BY CARBON SILICON LINKAGES, AND BEING SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF METHYL, ETHYL, AND PHENYL RADICALS, INTRODUCING THE COATED METAL INTO A HOT PURGING CHAMBER HAVING A NON-OXIDIZING ATMOSPHERE FLOWING THERETHROUGH IN SUCH MANNER AS TO REMOVE THE SILICONE COATING FROM THE METAL, AND THEREAFTER MOVING THE METAL INTO THE HEAT-TREATING ZONE OF A FURNACE.
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) | 1959-06-26 | 1959-12-26 | 1960-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-26 | 1963-12-26 | 1964-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-26 | 1967-12-26 | 1968-06-26 | $7700.00 | Window Closed / Lapsed |