US2906465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore treatment
Assignee: South Western Minerals Corp
•
Filing: 1957-06-10
•
Granted: 1959-09-29
•
Expires: 1977-06-10
Abstract
No abstract record available.
Inventors
- 👤 Andrew T Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:41
CPC Classifications
C; C22; C22B; C22B1/00; B; B02; B02C; B02C13/00; B02C13/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE PROCESS OF UPGRADING A LOW GRADE ORE HAVING A SEDIMENTARY DEPOSITION OF MINERAL ON THE SURFACES OF PARTICLES COMPRISING BREAKING DOWN THE ORE TO THE DISCREET PARTICLES, CONFINING THE DISCREET PARTICLES TO FLOW ALONG A PREDETERMINED PATH AND REPEATEDLY SCUFFING SAID GRAINS FRICTIONALLY WITH EACH OTHER AND WITH SMOOTH SURFACES UNDER INFLUENCES OF CENTRIFUGAL FORCE AND GRAVITY AND ALTERNATELY THEREWITH ROLLING SAID DISCREET PARTICLES IN CONTACT WITH EACH OTHER UNDER THE INFLUENCE OF GRAVITY TO POLISH OFF AND PULVERIZE SAID MINERAL DEPOSITS TO A DUST WITHOUT CRACKING THE DISCREET PARTICLES, PROGRESSIVELY WITHDRAWING A PORTION OF THE MINERAL DUST AS A CONCENTRATE AT AN INTERMEDIATE STAGE OF SAID SCUFFING AND ROLLING, AND SEPARATING THE REMAINING PORTION OF THE MINERAL DUST AS A CONCENTRATE FROM THE DISCREET PARTICLES AFTER SAID SCUFFING AND ROLLING.
Claim 2
Dependent Claim
132 words
THE PROCESS OF UPGRADING A LOW GRADE ORE HAVING A SEDIMENTARY DEPOSITION OF MINERAL ON THE SURFACES OF PARTICLES COMPRISING BREAKING DOWN THE ORE TO THE DISCREET PARTICLES, CONFINING THE DISCREET PARTICLES TO FLOW ALONG A PREDETERMINED PATH AND REPEATEDLY SCUFFING SAID GRAINS FRICTIONALLY WITH EACH OTHER AND WITH SMOOTH SURFACES UNDER INFLUENCES OF CENTRIFUGAL FORCE AND GRAVITY AND ALTERNATELY THEREWITH ROLLING SAID DISCREET PARTICLES IN CONTACT WITH EACH OTHER UNDER THE INFLUENCE OF GRAVITY TO POLISH OFF AND PULVERIZE SAID MINERAL DEPOSITS TO A DUST WITHOUT CRACKING THE DISCREET PARTICLES, PROGRESSIVELY WITHDRAWING A PORTION OF THE MINERAL DUST AS A CONCENTRATE AT AN INTERMEDIATE STAGE OF SAID SCUFFING AND ROLLING, AND SEPARATING THE REMAINING PORTION OF THE MINERAL DUST AS A CONCENTRATE FROM THE DISCREET PARTICLES AFTER SAID SCUFFING AND ROLLING.
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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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |