Patent US3234147A successfully refreshed from Google Patents.
US3234147A
Expired / Lapsed
US
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Hardened molecular sieve agglomerates and manufacture thereof
Assignee: Union Carbide Corp
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Filing: 1961-09-25
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Granted: 1966-02-08
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Drost Wilfred
- 👤 Elmer E Dutchess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:54
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/183
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A METHOD FOR HARDENING CRYSTALLINE ZEOLITE MOLECULAR SIEVE AGGLOMERATES COMPRISING THE STEPS OF PROVIDING A HYDRATED AGGLOMERATE OF SAID ZEOLITIC MOLECULAR SIEVE AND A CLAY MINERAL BINDER; PROVIDING AN AQUEIOUS SOLUTION OF AN ALKALI METAL SILICATE HAVING A SOLIDS CONTENT OF BETWEEN ABOUT 3% AND 35% BY WEIGHT; CONTACTING SAID HYDRATED AGGLOMERATE AND SAID AQUEOUS SOLUTION FOR SUFFICIENT DURATION TO IMPREGNATE SUCH AGGLOMERATE WITH SAID ALKALI METAL SILICATE; SEPARATING; AND FIRING THE IMPREGNATED AGGLOMERATE AT TEMPERATURE OF AT LEAST 650*F. AND BELOW THAT TEMPERATURE AT WHICH SAID CRYSTALLINE ZEOLITE MOLEUCLAR SIEVE IS STRUCTURALLY UNSTABLE SO AS TO CURE THE SILICATE HARDNER.
Claim 2
Independent Claim
101 words
A METHOD FOR HARDENING CRYSTALLINE ZEOLITE MOLECULAR SIEVE AGGLOMERATES COMPRISING THE STEPS OF PROVIDING A HYDRATED AGGLOMERATE OF SAID ZEOLITIC MOLECULAR SIEVE AND A CLAY MINERAL BINDER; PROVIDING AN AQUEIOUS SOLUTION OF AN ALKALI METAL SILICATE HAVING A SOLIDS CONTENT OF BETWEEN ABOUT 3% AND 35% BY WEIGHT; CONTACTING SAID HYDRATED AGGLOMERATE AND SAID AQUEOUS SOLUTION FOR SUFFICIENT DURATION TO IMPREGNATE SUCH AGGLOMERATE WITH SAID ALKALI METAL SILICATE; SEPARATING; AND FIRING THE IMPREGNATED AGGLOMERATE AT TEMPERATURE OF AT LEAST 650*F. AND BELOW THAT TEMPERATURE AT WHICH SAID CRYSTALLINE ZEOLITE MOLEUCLAR SIEVE IS STRUCTURALLY UNSTABLE SO AS TO CURE THE SILICATE HARDNER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |