Patent US2815292A successfully refreshed from Google Patents.
US2815292A
Expired / Lapsed
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Method for dewatering clay
Assignee: Thiele Kaolin Co
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Filing: 1953-06-30
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Granted: 1957-12-03
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Expires: 1973-06-30
Abstract
No abstract record available.
Inventors
- 👤 William F Thiele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:44
CPC Classifications
B; B28; B28C; B28C1/00; B28C1/02; B28C1/06; B28C1/08; B28C1/082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN THE PREPARATION OF CLAY, THE STEPS COMPRISING DEFLOCCULATING AQUEOUS RAW CLAY, REMOVING GROSS IMPURITIES THEREFROM, CLASSIFYING THE CLAY WHILE STILL DEFLOCCULATED, FLOCCULATING THE CLASSIFIED CLAY, HEATING THE FLOCCULATED CLASSIFIED AQUEOUS CLAY SUBSTANTIALLY ABOVE AMBIENT TEMPERATURE BUT NOT TO THE BOILING POINT, AND DEWATERING THE FLOCCULATED CLASSIFIED CLAY SLIP.
Claim 2
Dependent Claim
49 words
IN THE PREPARATION OF CLAY, THE STEPS COMPRISING DEFLOCCULATING AQUEOUS RAW CLAY, REMOVING GROSS IMPURITIES THEREFROM, CLASSIFYING THE CLAY WHILE STILL DEFLOCCULATED, FLOCCULATING THE CLASSIFIED CLAY, HEATING THE FLOCCULATED CLASSIFIED AQUEOUS CLAY SUBSTANTIALLY ABOVE AMBIENT TEMPERATURE BUT NOT TO THE BOILING POINT, AND DEWATERING THE FLOCCULATED CLASSIFIED CLAY SLIP.
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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |