US3102856A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platy talc beneficiation
Assignee: Johnson and Johnson
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Filing: 1960-06-24
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Granted: 1963-09-03
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Expires: 1980-06-24
Abstract
No abstract record available.
Inventors
- 👤 Chase Walter Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A METHOD OF TREATING TALC TO OBTAIN A TALC OF INCREASED PLATY TALC CONTENT THE STEPS COMPRISING: PREPARING AN AQUEOUS SLURRY OF FINELY GROUND TALC HAVING MOST OF THE FINES OF A SIZE LESS THAN 15 MICRONS REMOVED, SAID SLURRY HAVING A SOLIDS OF LESS THAN 15 PERCENT BY WEIGHT OF FINELY GROUND TALC AND CONTAINING A SYNTHETIC ORGANIC WETTING AGENT IN AMOUNTS OF AT LEAST 0.01 POUND PER TON OF SOLIDS AND SAID SLURRY BEING SUBSTANTIALLY FREE FROM NETURAL OILS, FATS, AND WAXES OF MINERAL, ANIMAL, AND VEGETABLE ORIGIN, SUBJECTING SAID AQUEOUS SLURRY TO FROTH FLOTATION, AND RECOVERING IN THE FORTH FORMED A TALC OF ENHANCED PLATY TALC CONTENT.
Claim 2
Dependent Claim
111 words
IN A METHOD OF TREATING TALC TO OBTAIN A TALC OF INCREASED PLATY TALC CONTENT THE STEPS COMPRISING: PREPARING AN AQUEOUS SLURRY OF FINELY GROUND TALC HAVING MOST OF THE FINES OF A SIZE LESS THAN 15 MICRONS REMOVED, SAID SLURRY HAVING A SOLIDS OF LESS THAN 15 PERCENT BY WEIGHT OF FINELY GROUND TALC AND CONTAINING A SYNTHETIC ORGANIC WETTING AGENT IN AMOUNTS OF AT LEAST 0.01 POUND PER TON OF SOLIDS AND SAID SLURRY BEING SUBSTANTIALLY FREE FROM NETURAL OILS, FATS, AND WAXES OF MINERAL, ANIMAL, AND VEGETABLE ORIGIN, SUBJECTING SAID AQUEOUS SLURRY TO FROTH FLOTATION, AND RECOVERING IN THE FORTH FORMED A TALC OF ENHANCED PLATY TALC CONTENT.
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) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |