US2994616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay processing
Assignee: Georgia Kaolin Co
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Filing: 1958-03-31
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Granted: 1961-08-01
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Ben W Rowland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:33
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A METHOD OF TREATING NON-DILATANT CLAY TO REDUCE ITS AQUEOUS VISCOSITY COMPRISING THE STEPS OF DISPERSING THE CLAY TO BE TREATED IN AN AQUEOUS VEHICLE, ADDING TO THE DISPERSED CLAY AT LEAST ABOUT 0.25% OF A SALT OF GUANIDINE, PERMITTING THE MIXTURE TO STAND WITH THE GUANIDINE SALT IN CONTACT WITH THE CLAY UNTIL THROUGH DISPERSION HAS OCCURRED, SEPARATING THE TREATED CLAY FROM THE AQUEOUS VEHICLE AND DRYING.
Claim 2
Dependent Claim
69 words
IN A METHOD OF TREATING NON-DILATANT CLAY TO REDUCE ITS AQUEOUS VISCOSITY COMPRISING THE STEPS OF DISPERSING THE CLAY TO BE TREATED IN AN AQUEOUS VEHICLE, ADDING TO THE DISPERSED CLAY AT LEAST ABOUT 0.25% OF A SALT OF GUANIDINE, PERMITTING THE MIXTURE TO STAND WITH THE GUANIDINE SALT IN CONTACT WITH THE CLAY UNTIL THROUGH DISPERSION HAS OCCURRED, SEPARATING THE TREATED CLAY FROM THE AQUEOUS VEHICLE AND DRYING.
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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |