US2881067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing powder metals
Assignee: Office National d'Études et de Recherches Aérospatiales
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Filing: 1956-02-27
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Granted: 1959-04-07
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Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 Hivert Andre
- 👤 Tacvorian Skon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:18
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A METHOD OF MAKING FINE CHROMIUM POWDER COMPRISING VAPORIZING MAGNESIUM IN ONE ZONE AND PASSING THE RESULTANT VAPOR OVER A POWDERED CHROMIUM COMPOUND IN A SECOND ZONE, THE POWDERED CHROMIUM COMPOUND HAVING A DETERMINABLE PARTICLE SIZE, AND MAINTAINING THE PARTICLE SIZE OF THE CHROMIUM POWDER THUS PRODUCED SUB-
Claim 2
Independent Claim
48 words
A METHOD OF MAKING FINE CHROMIUM POWDER COMPRISING VAPORIZING MAGNESIUM IN ONE ZONE AND PASSING THE RESULTANT VAPOR OVER A POWDERED CHROMIUM COMPOUND IN A SECOND ZONE, THE POWDERED CHROMIUM COMPOUND HAVING A DETERMINABLE PARTICLE SIZE, AND MAINTAINING THE PARTICLE SIZE OF THE CHROMIUM POWDER THUS PRODUCED SUB-
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) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |