US2650203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of silicate adsorbents
Assignee: TIDE WATER ASSOCIATED OIL Co
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Filing: 1951-02-15
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Granted: 1953-08-25
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Expires: 1971-02-15
Abstract
No abstract record available.
Inventors
- 👤 Russell J Hawes
- 👤 Charles C Winding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:34
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/46; B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
IN A PROCESS FOR PRODUCTION OF HARD GRANULAR SYNTHETIC ALKALINE EARTH METAL SILICATES OF PERCOLANT SIZE BY PRECIPITATING UNDER CONTROLLED CONDIDITIONS A SILICATE OF AN ALKALINE EARTH METAL REPLACEABLE BY ANOTHER ALKALINE EARTH METAL IN A CATION OR BASE EXCHANGE REACTION AND WHICH SILICATE IS DRIABLE TO A HARD CAKE GRINDABLE TO HARD GRANULAR PARTICLES, DRYING THE PRECIPITATE TO A HARD CAKE, GRINDING THE CAKE TO A MASS OF HARD GRANULAR PARCOLANT SIZE PARTICLES AND A MASS OF SUB-PERCOLANT SIZE PARTICLES AND SUBJECTING SAID PERCOLANT SIZE PARTICLES TO SAID CATION OR BASE EXCHANGE REACTION, THE IMPROVEMENT, PROVIDING FOR SUBSTANTIAL CONVERSION OF SAID MASS OF SUB-PERCOLANT SIZE PARTICLES TO HARD GRANULAR PARTICLES OF PERCOLANT SIZE, WHICH COMPRISES PRODUCING FROM SAID MASS OF SUB-PERCOLANT PARTICLES A CONTROLLED SIZE PARTICLE MASS HAVING AN AVERAGE PARTICLE SIZE NOT EXCEEDING ABOUT 50 MICRONS AND CONTAINING NOT MORE THAN A SMALL AMOUNT OF PARTICLES OVER ABOUT 50 MICRONS IN SIZE AND INTRODUCING SAID CONTROLLED SIZE PARTICLE MASS INTO THE AFORESAID PROCESS PRIOR TO DRYING THE PRECIPITATE.
Claim 2
Dependent Claim
170 words
IN A PROCESS FOR PRODUCTION OF HARD GRANULAR SYNTHETIC ALKALINE EARTH METAL SILICATES OF PERCOLANT SIZE BY PRECIPITATING UNDER CONTROLLED CONDIDITIONS A SILICATE OF AN ALKALINE EARTH METAL REPLACEABLE BY ANOTHER ALKALINE EARTH METAL IN A CATION OR BASE EXCHANGE REACTION AND WHICH SILICATE IS DRIABLE TO A HARD CAKE GRINDABLE TO HARD GRANULAR PARTICLES, DRYING THE PRECIPITATE TO A HARD CAKE, GRINDING THE CAKE TO A MASS OF HARD GRANULAR PARCOLANT SIZE PARTICLES AND A MASS OF SUB-PERCOLANT SIZE PARTICLES AND SUBJECTING SAID PERCOLANT SIZE PARTICLES TO SAID CATION OR BASE EXCHANGE REACTION, THE IMPROVEMENT, PROVIDING FOR SUBSTANTIAL CONVERSION OF SAID MASS OF SUB-PERCOLANT SIZE PARTICLES TO HARD GRANULAR PARTICLES OF PERCOLANT SIZE, WHICH COMPRISES PRODUCING FROM SAID MASS OF SUB-PERCOLANT PARTICLES A CONTROLLED SIZE PARTICLE MASS HAVING AN AVERAGE PARTICLE SIZE NOT EXCEEDING ABOUT 50 MICRONS AND CONTAINING NOT MORE THAN A SMALL AMOUNT OF PARTICLES OVER ABOUT 50 MICRONS IN SIZE AND INTRODUCING SAID CONTROLLED SIZE PARTICLE MASS INTO THE AFORESAID PROCESS PRIOR TO DRYING THE PRECIPITATE.
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) | 1956-08-24 | 1957-02-23 | 1957-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-24 | 1961-02-23 | 1961-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-24 | 1965-02-23 | 1965-08-25 | $7700.00 | Window Closed / Lapsed |