US3079333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gel-forming attapulgite clay and method for preparing same
Assignee: Minerals and Chemicals Philipp Corp
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Filing: 1960-01-11
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Granted: 1963-02-26
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Expires: 1980-01-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas S Malone
- 👤 Aldo P Allegrini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:23
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A METHOD OF TREATING ATTAPULGITE CLAY TO IMPROVE ITS GEL-FORMING PROPERTIES WHICH COMPRISES RAPIDLY DRYING MOIST MASSES OF ATTAPULGITE CLAY TO V.M. OF ABOUT 17% TO ABOUT 32% BY SUSPENDING SAID MASSES IN HIGH VELOCITY MOISTURE ABSORPTIVE GASES AT A TEMPERATURE OF FROM ABOUT 225*F. TO ABOUT 900*F. WHILE SIMULTANEOUSLY PULVERIZING SAID MASSES TO A FINENESS SUCH THAT SUBSTANTIALLY ALL PARTICLES ARE FINER THAN 48 MESH AND NOT MORE THAN ABOUT 50% BY WEIGHT ARE FINER THAN 325 MESH.
Claim 2
Independent Claim
79 words
A METHOD OF TREATING ATTAPULGITE CLAY TO IMPROVE ITS GEL-FORMING PROPERTIES WHICH COMPRISES RAPIDLY DRYING MOIST MASSES OF ATTAPULGITE CLAY TO V.M. OF ABOUT 17% TO ABOUT 32% BY SUSPENDING SAID MASSES IN HIGH VELOCITY MOISTURE ABSORPTIVE GASES AT A TEMPERATURE OF FROM ABOUT 225*F. TO ABOUT 900*F. WHILE SIMULTANEOUSLY PULVERIZING SAID MASSES TO A FINENESS SUCH THAT SUBSTANTIALLY ALL PARTICLES ARE FINER THAN 48 MESH AND NOT MORE THAN ABOUT 50% BY WEIGHT ARE FINER THAN 325 MESH.
References Cited (Backward Citations)
US2231328A
Cited
US2862278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |