US2834666A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of metal powders
Assignee: Wargons AB
•
Filing: 1953-09-17
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Granted: 1958-05-13
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Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Bergh Sven Sigvard
- 👤 Ericsson Curt Anders Gustav
- 👤 Troberg Bolge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:00
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD FOR THE MANUFACTURE OF POWDERS FROM LOW CARBON IRON-CHROMIUM-NICKEL ALLOYS CONTAINING FROM 30% TO 60% OF CHROMIUM AND FROM 10% TO 30% OF NICKEL, THE WEIGHT OF THE NICKEL AMOUNTING TO FROM ONEHALF TO ONE-THIRD OF THE WEIGHT OF THE CHROMIUM WHICH COMPRISES SUBJECTING SUCH AN ALLOY TO A TEMPERATURE WITHIN THE RANGE FROM 600*C. TO 880*C. FOR A PERIOD OF TIME SUFFICIENT TO EFFECT THE TRANSFORMATION OF SAID ALLOY INTO THE SIGMA PHASE, AND COOLING AND CRUSHING SAID ALLOY.
Claim 2
Independent Claim
82 words
A METHOD FOR THE MANUFACTURE OF POWDERS FROM LOW CARBON IRON-CHROMIUM-NICKEL ALLOYS CONTAINING FROM 30% TO 60% OF CHROMIUM AND FROM 10% TO 30% OF NICKEL, THE WEIGHT OF THE NICKEL AMOUNTING TO FROM ONEHALF TO ONE-THIRD OF THE WEIGHT OF THE CHROMIUM WHICH COMPRISES SUBJECTING SUCH AN ALLOY TO A TEMPERATURE WITHIN THE RANGE FROM 600*C. TO 880*C. FOR A PERIOD OF TIME SUFFICIENT TO EFFECT THE TRANSFORMATION OF SAID ALLOY INTO THE SIGMA PHASE, AND COOLING AND CRUSHING SAID ALLOY.
References Cited (Backward Citations)
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Cited
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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) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |