US3418237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Settling of non-argillaceous ore pulps and mineral suspensions by use of water-soluble acrylic polymers
Assignee: Wyeth Holdings LLC
•
Filing: 1963-12-22
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Granted: 1968-12-24
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Expires: 1983-12-22
Abstract
No abstract record available.
Inventors
- 👤 Robert B Booth
- 👤 John M Dobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/54; B; B01; B01D; B01D21/00; B01D21/01; Y; Y10; Y10S; Y10S210/00; Y10S210/902; Y10S210/906; Y10S210/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PROCESS OF SETTLING ORE PULPS AND MINERAL SUSPENSIONS CONTAINING FINELY-DIVIDED, PREDOMINANTLY NON-ARGILLACEOUS MINERALS WHICH COMPRISES TREATING SAID ORE PULPS AND MINERAL SUSPENSIONS HAVING A PULP DENSITY OF NOT MORE THAN ABOUT 50% SOLIDS WITH A WATER-SOLUBLE POLYMER OF A COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
45 words
A PROCESS OF SETTLING ORE PULPS AND MINERAL SUSPENSIONS CONTAINING FINELY-DIVIDED, PREDOMINANTLY NON-ARGILLACEOUS MINERALS WHICH COMPRISES TREATING SAID ORE PULPS AND MINERAL SUSPENSIONS HAVING A PULP DENSITY OF NOT MORE THAN ABOUT 50% SOLIDS WITH A WATER-SOLUBLE POLYMER OF A COMPOUND REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
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GB475671A
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GB555089A
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US2419930A
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US2563897A
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US2469696A
Cited
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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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |