US3202281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the flotation of finely divided minerals
Assignee: Individual
•
Filing: 1964-10-01
•
Granted: 1965-08-24
•
Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 Weston David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:08
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/14; B03D1/16; B03D1/22; B01; B01J; B01J19/00; B01J19/08; B01J19/10; B03D1/1443; B03D1/1456; B03D1/1493; B03D1/24; B03D1/242; B03D1/245; B01J2219/00; B01J2219/19; B01J2219/194; B01J2219/1941; B01J2219/1942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD FOR THE FLOTATION OF FINELY DIVIDED MINERALS WHICH COMPRISES, FORMING A PULP OF A FINELY DIVIDED MINERAL IN A FIRST LIQUID, PROVIDING A SECOND LIQUID COMPRISING A MINERAL FLOTATION TREATING REAGENT EFFECTIVELY IMMISCIBLE WITH SAID FIRST LIQUIDF AND FEEDING A MECHANICAL DISPERSION OF SAID LIQUID MINERAL FLOTATION TREATING REAGENT IN A FINELY DIVIDED STATE INTO A SELECTED ZONE OF SAID FIRST LIQUID, APPLYING ULTRASONIC VIBRATION TO THE FINELY DIVIDED REAGENT ENTERING SAID ZONE, MAINTAINING WITHIN SAID ZONE A LOCALIZED CONCENTRATION OF SAID MENERAL FLOTATION TREATING
Claim 2
Independent Claim
87 words
A METHOD FOR THE FLOTATION OF FINELY DIVIDED MINERALS WHICH COMPRISES, FORMING A PULP OF A FINELY DIVIDED MINERAL IN A FIRST LIQUID, PROVIDING A SECOND LIQUID COMPRISING A MINERAL FLOTATION TREATING REAGENT EFFECTIVELY IMMISCIBLE WITH SAID FIRST LIQUIDF AND FEEDING A MECHANICAL DISPERSION OF SAID LIQUID MINERAL FLOTATION TREATING REAGENT IN A FINELY DIVIDED STATE INTO A SELECTED ZONE OF SAID FIRST LIQUID, APPLYING ULTRASONIC VIBRATION TO THE FINELY DIVIDED REAGENT ENTERING SAID ZONE, MAINTAINING WITHIN SAID ZONE A LOCALIZED CONCENTRATION OF SAID MENERAL FLOTATION TREATING
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |