US2609925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separation of partly dried gel particles
Assignee: ExxonMobil Oil Corp
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Filing: 1951-04-09
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Granted: 1952-09-09
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Expires: 1971-04-09
Abstract
No abstract record available.
Inventors
- 👤 Paul B Weisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:28
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0052; B01J13/0069; B01J21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD FOR EFFECTING SEPARATION OF PARTIALLY DRIED PARTICLES OF INORGANIC GEL IN REGARDS TO THE EXTENT OF COMPLETION OF SYNERESIS THEREOF, WHICH COMPRISES CONDUCTING HYDROGEL PARTICLES OF SUBSTANITALLY UNIFORM DIMENSION ONTO A SCREEN OF MESH SIZE SUCH THAT GEL PARTICLES RESULTING UPON SUBSTANTIALLY COMPLETE SHRINKAGE OF SAID HYDROGEL PARTICLES PASS THROUGH SAID SCREEN LEAVING PARTICLES WHICH HAVE NOT ATTAINED SUBSTANTIALLY COMPLETE SHRINKAGE REMAINING ON SAID SCREEN, FORCING AN UPWARDLY MOVING STREAM OF DRYING GAS THROUGH SAID HYDROGEL PARTICLES UNTIL SAID SUBSTANTIALLY COMPLETE SHRINKAGE THEREOF IS EFFECTED, WHEREBY SEPARATION IS ACHIEVED BETWEEN INORGANIC GEL PARTICLES WHICH HAVE ATTAINED SUBSTANTIALLY COMPLETE SHRINKAGE AND PASSED THROUGH SAID SCREEN AND THOSE PARTICLES REMAINING ON SAID SCREEN WHICH HAVE NOT ATTAINED SUBSTANTIALLY COMPLETE SHRINKAGE.
Claim 2
Independent Claim
120 words
A METHOD FOR EFFECTING SEPARATION OF PARTIALLY DRIED PARTICLES OF INORGANIC GEL IN REGARDS TO THE EXTENT OF COMPLETION OF SYNERESIS THEREOF, WHICH COMPRISES CONDUCTING HYDROGEL PARTICLES OF SUBSTANITALLY UNIFORM DIMENSION ONTO A SCREEN OF MESH SIZE SUCH THAT GEL PARTICLES RESULTING UPON SUBSTANTIALLY COMPLETE SHRINKAGE OF SAID HYDROGEL PARTICLES PASS THROUGH SAID SCREEN LEAVING PARTICLES WHICH HAVE NOT ATTAINED SUBSTANTIALLY COMPLETE SHRINKAGE REMAINING ON SAID SCREEN, FORCING AN UPWARDLY MOVING STREAM OF DRYING GAS THROUGH SAID HYDROGEL PARTICLES UNTIL SAID SUBSTANTIALLY COMPLETE SHRINKAGE THEREOF IS EFFECTED, WHEREBY SEPARATION IS ACHIEVED BETWEEN INORGANIC GEL PARTICLES WHICH HAVE ATTAINED SUBSTANTIALLY COMPLETE SHRINKAGE AND PASSED THROUGH SAID SCREEN AND THOSE PARTICLES REMAINING ON SAID SCREEN WHICH HAVE NOT ATTAINED SUBSTANTIALLY COMPLETE SHRINKAGE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-09 | 1956-03-10 | 1956-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-09 | 1960-03-10 | 1960-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-09 | 1964-03-10 | 1964-09-09 | $7700.00 | Window Closed / Lapsed |