Patent US3219590A successfully refreshed from Google Patents.
US3219590A
Expired / Lapsed
US
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Bonded molecular sieves
Assignee: Union Carbide Corp
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Filing: 1961-08-01
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Granted: 1965-11-23
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Expires: 1981-08-01
Abstract
No abstract record available.
Inventors
- 👤 George L Riband
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:07
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/16; B01J20/18; B01J20/183; Y; Y10; Y10S; Y10S210/00; Y10S210/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN AGGLOMERATE HAVING BEEN FORMED FROM A MIXTURE OF CRYSTALS OF A CRYSTALLING ZEOLITIC MOLECULAR SIEVE, A KAOLIN TYPE CLAY AND LIGNOSULFONATE; SAID KAOLIN TYPE CLAY COMPRISING BETWEEN 1 PERCENT AND 40 PERCENT BY WEIGHT OF SAID MIXTURE, SAID LIGNOSULFONATE COMPRISING BETWEEN ABOUT 2 PERCENT AND 5 PERCENT BY WEIGH T OF SAID MIXTURE SAID AGGLOMERATE HAVING BEEN FORMED FROM SAID MIXTURE INTO A MASS AND FIRED AT A TEMPERATURE SUFFICIENTLY HGH TO DRY SAID KAOLIN TYPE CLAY, PROVIDE A BOUND PRODUCT, AND ACTIVATGE SAID CRYSTALLING ZEOLITIC MOLECULAR SIEVE, THE FIRING TEMPERATURE BEING BELOW THE TEMPERATURE AT WHICH SAID CRYSTALLINE ZEOLITIC MOLECULAR SIEVE IS STRUCTURALLY UNSTABLE.
Claim 2
Dependent Claim
106 words
AN AGGLOMERATE HAVING BEEN FORMED FROM A MIXTURE OF CRYSTALS OF A CRYSTALLING ZEOLITIC MOLECULAR SIEVE, A KAOLIN TYPE CLAY AND LIGNOSULFONATE; SAID KAOLIN TYPE CLAY COMPRISING BETWEEN 1 PERCENT AND 40 PERCENT BY WEIGHT OF SAID MIXTURE, SAID LIGNOSULFONATE COMPRISING BETWEEN ABOUT 2 PERCENT AND 5 PERCENT BY WEIGH T OF SAID MIXTURE SAID AGGLOMERATE HAVING BEEN FORMED FROM SAID MIXTURE INTO A MASS AND FIRED AT A TEMPERATURE SUFFICIENTLY HGH TO DRY SAID KAOLIN TYPE CLAY, PROVIDE A BOUND PRODUCT, AND ACTIVATGE SAID CRYSTALLING ZEOLITIC MOLECULAR SIEVE, THE FIRING TEMPERATURE BEING BELOW THE TEMPERATURE AT WHICH SAID CRYSTALLINE ZEOLITIC MOLECULAR SIEVE IS STRUCTURALLY UNSTABLE.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |