US3341325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing alloy-steel articles
Assignee: Crucible Materials Corp
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Filing: 1966-12-09
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Granted: 1967-09-12
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Expires: 1986-12-09
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Cloran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:49
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/12; B22F3/1208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD FOR PRODUCING FINE-GRAINED, HOMOGENEOUS ARTICLES CHARACTERIZED BY EXTEME CLEANLINESS FROM OXYGEN-CONTAMINATED, CARBON-BEARING METAL PARTICLES COMPRISING CONFINING A CHARGE OF SAID PARTICLES IN A SUBSTANTIALLY MOISTURE-FREE GAS-TIGHT CONTAINER, IN THE ABSENCE OF CONTINUOUS EVACUATION HEATING SAID CHARGE AND CONTAINER TO AN ELEVATED TEMPERATURE AND FOR A TIME SUFFICIENT TO SUBSTANTIALLY REDUCE OXIDES PRESENT ON THE POWDER WITHOUT CAUSING SUBSTANTIAL AGGLOMERATION OF CARBIDES AND SULFIDES, BEGINNING FURTHER EVACUATION OF SAID CONTAINER WHEN THE PRESSURE THEREIN REACHES A PREDETERMINED LEVEL, CONTINUING EVACUATION UNTIL REMOVAL OF GASEOUS REACTION PRODUCTS IS SUBSTANTIALLY COMPLETE, AND COMPACTING SAID CHARGE WITHIN SAID CONTAINER WHILE AT LOW PRESSURE AND ELEVATED TEMPERATURE.
Claim 2
Independent Claim
104 words
A METHOD FOR PRODUCING FINE-GRAINED, HOMOGENEOUS ARTICLES CHARACTERIZED BY EXTEME CLEANLINESS FROM OXYGEN-CONTAMINATED, CARBON-BEARING METAL PARTICLES COMPRISING CONFINING A CHARGE OF SAID PARTICLES IN A SUBSTANTIALLY MOISTURE-FREE GAS-TIGHT CONTAINER, IN THE ABSENCE OF CONTINUOUS EVACUATION HEATING SAID CHARGE AND CONTAINER TO AN ELEVATED TEMPERATURE AND FOR A TIME SUFFICIENT TO SUBSTANTIALLY REDUCE OXIDES PRESENT ON THE POWDER WITHOUT CAUSING SUBSTANTIAL AGGLOMERATION OF CARBIDES AND SULFIDES, BEGINNING FURTHER EVACUATION OF SAID CONTAINER WHEN THE PRESSURE THEREIN REACHES A PREDETERMINED LEVEL, CONTINUING EVACUATION UNTIL REMOVAL OF GASEOUS REACTION PRODUCTS IS SUBSTANTIALLY COMPLETE, AND COMPACTING SAID CHARGE WITHIN SAID CONTAINER WHILE AT LOW PRESSURE AND ELEVATED TEMPERATURE.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |