Patent US3326705A successfully refreshed from Google Patents.
US3326705A
Expired / Lapsed
US
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Method of reducing clay viscosity
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1965-12-01
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Granted: 1967-06-20
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Expires: 1985-12-01
Abstract
No abstract record available.
Inventors
- 👤 James B Duke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:04
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/04; C04B33/06; C04B33/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A METHOD FOR REDUCING THE VISCOSITY OF KAOLIN CLAY BY SUBJECTING A FLUID CLAY-WATER SYSTEM CONTAINING 60 TO 77 PERCENT CLAY SOLIDS TO MECHANICAL WORK WITH A HIGH ENERGY INPUT, THE IMPROVEMENT WHICH COMPRISES PRETREATING SAID KAOLIN CLAY BY FORMING IT INTO A FLUID SLIP CONTAINING WATER, 10 TO 30 PERCENT BY WEIGHT CLAY SOLIDS AND ABOUT 5 TO 40 LBS. HF PER TON OF SAID CLAY, AGITATING SAID SLIP, SEPARATING SAID CLAY FROM THE AQUEOUS PHASE AND WASHING SAID CLAY TO ELIMINATE FREE ACID.
Claim 2
Dependent Claim
86 words
IN A METHOD FOR REDUCING THE VISCOSITY OF KAOLIN CLAY BY SUBJECTING A FLUID CLAY-WATER SYSTEM CONTAINING 60 TO 77 PERCENT CLAY SOLIDS TO MECHANICAL WORK WITH A HIGH ENERGY INPUT, THE IMPROVEMENT WHICH COMPRISES PRETREATING SAID KAOLIN CLAY BY FORMING IT INTO A FLUID SLIP CONTAINING WATER, 10 TO 30 PERCENT BY WEIGHT CLAY SOLIDS AND ABOUT 5 TO 40 LBS. HF PER TON OF SAID CLAY, AGITATING SAID SLIP, SEPARATING SAID CLAY FROM THE AQUEOUS PHASE AND WASHING SAID CLAY TO ELIMINATE FREE ACID.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |