Patent US2127103A successfully refreshed from Google Patents.
Patent US2564546A successfully refreshed from Google Patents.
US2564546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of separating ores by treatment with a gaseous polyhalosilane
Assignee: CARL H SCHEU
•
Filing: 1947-07-23
•
Granted: 1951-08-14
•
Expires: 1967-07-23
Abstract
No abstract record available.
Inventors
- 👤 Karl F Scheu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:34
CPC Classifications
B; B03; B03D; B03D1/00; B03B; B03B1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS OF TREATING TO SEPARATE A MIXTURE OF METAL ORES HAVING RELATIVELY CLOSE SPECIFIC GRAVITIES COMMINUTED TO A PARTICLE SIZE OF BETWEEN ABOUT 10 AND 60 MESH WHICH CONSISTS IN SIFTING THE COMMIUNUTED MIXTURE THROUGH A ZONE OF GASEOUS POLYHALOSILANE, INTRODUCING THE PARTICLES INTO A BODY OF WATER BELOW THE SURFACE THEREOF, WHERE BY HAVING OF MATERIAL OF LESSER SPECIFIC GRAVITY ARE FORCED TO THE SURFACE OF THE BODY OF WATER AND THE PARTICLES OF MATERIAL OF GREATER SPECIFIC GRAVITY SINK.
Claim 2
Dependent Claim
82 words
THE PROCESS OF TREATING TO SEPARATE A MIXTURE OF METAL ORES HAVING RELATIVELY CLOSE SPECIFIC GRAVITIES COMMINUTED TO A PARTICLE SIZE OF BETWEEN ABOUT 10 AND 60 MESH WHICH CONSISTS IN SIFTING THE COMMIUNUTED MIXTURE THROUGH A ZONE OF GASEOUS POLYHALOSILANE, INTRODUCING THE PARTICLES INTO A BODY OF WATER BELOW THE SURFACE THEREOF, WHERE BY HAVING OF MATERIAL OF LESSER SPECIFIC GRAVITY ARE FORCED TO THE SURFACE OF THE BODY OF WATER AND THE PARTICLES OF MATERIAL OF GREATER SPECIFIC GRAVITY SINK.
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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |