Patent US3014078A successfully refreshed from Google Patents.
US3014078A
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Separation of cresol isomers
Assignee: Union Oil Company of California
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Filing: 1959-02-02
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Granted: 1961-12-19
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Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Raymond N Fleck
- 👤 Carlyle G Wight
- 👤 Edward L Wiseman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:59
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/68; C07C37/70; C07C37/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A PROCESS FOR SEPARATING CRESOL ISOMERS WHICH COMPRISES: (1) CONTACTING A FLUID MIXTURE CONSISTING ESSENTIALLY OF AT LEAST TWO OF SAID ISOMERS WITH A LEAN GRANULAR ADSORBENT CONSISTING ESSENTIALLY OF A PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITIC METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER BETWEEN ABOUT 7 A. AND ABOUT 13 A., SAID ADSORBENT BEING SELECTIVE FOR THE CRESOL ISOMERS IN THE DECREASING ORDER, PARA-, META-, AND ORTHO-, WHEREBY THERE IS OBTAINED A RICH ADSORBENT CONTAINING AN ADSORBATE ENRICHED IN THE CRESOL ISOMER IN SAID MIXTURE WHICH IS MOST READILY ADSORBED BY SAID ABSORBENT AND A RAFFINATE PRODUCT WHICH IS ENRICHED IN THE CRESOL ISOMER IN SAID MIXTURE WHICH IS LEAST READILY ADSORBED BY SAID ADSORBENT, (2) SEPARATING SAID RAFFINATE PRODUCT FROM SAID RICH ADSORBENT, AND (3) REMOVING THE MORE READILY ADSORBED CRESOL ISOMER FROM SAID RICH ABSORBENT.
Claim 2
Dependent Claim
138 words
A PROCESS FOR SEPARATING CRESOL ISOMERS WHICH COMPRISES: (1) CONTACTING A FLUID MIXTURE CONSISTING ESSENTIALLY OF AT LEAST TWO OF SAID ISOMERS WITH A LEAN GRANULAR ADSORBENT CONSISTING ESSENTIALLY OF A PARTIALLY DEHYDRATED CRYSTALLINE ZEOLITIC METALLO ALUMINO SILICATE HAVING PORES OF SUBSTANTIALLY UNIFORM DIAMETER BETWEEN ABOUT 7 A. AND ABOUT 13 A., SAID ADSORBENT BEING SELECTIVE FOR THE CRESOL ISOMERS IN THE DECREASING ORDER, PARA-, META-, AND ORTHO-, WHEREBY THERE IS OBTAINED A RICH ADSORBENT CONTAINING AN ADSORBATE ENRICHED IN THE CRESOL ISOMER IN SAID MIXTURE WHICH IS MOST READILY ADSORBED BY SAID ABSORBENT AND A RAFFINATE PRODUCT WHICH IS ENRICHED IN THE CRESOL ISOMER IN SAID MIXTURE WHICH IS LEAST READILY ADSORBED BY SAID ADSORBENT, (2) SEPARATING SAID RAFFINATE PRODUCT FROM SAID RICH ADSORBENT, AND (3) REMOVING THE MORE READILY ADSORBED CRESOL ISOMER FROM SAID RICH ABSORBENT.
References Cited (Backward Citations)
US2882243A
Cited
US2859256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-18 | 1965-06-19 | 1965-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-18 | 1969-06-19 | 1969-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-18 | 1973-06-19 | 1973-12-19 | $7700.00 | Window Closed / Lapsed |