US2967896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resolution of anthracene oils using zeolitic molecular sieves
Assignee: Union Oil Company of California
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Filing: 1959-03-03
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Granted: 1961-01-10
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Expires: 1979-03-03
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
2026-11-04 17:26
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS FOR SEPARATING A FLUID HYDROCARBON MIXTURE COMPRISING THE ISOMERS, ANTHRACENE AND PHENANTHRENE, WHICH COMPRISES CONTACTING SAID MIXTURE WITH A SOLID 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., WHEREBY THERE IS OBTAINED A RICH ADSORBENT ENRICHED IN THE MOST READILY ADSORBED OF SAID ISOMERS AND A FLUID RAFFINATE PRODUCT ENRICHED IN THE LEAST READILY ADSORBED OF SAID ISOMERS; AND TREATING SAID RICH ADSORBENT TO REMOVE THE MOST READILY ADSORBED ISOMER THEREFROM AS A FLUID EXTRACT PRODUCT, THE PROPORTIONS OF ANTHRACENE AND PHENANTHRENE IN SAID EXTRACT PRODUCT BEING DIFFERENT FROM THE PROPORTIONS OF ANTHRACENE AND PHENANTHRENE IN SAID RAFFINATE PRODUCT.
Claim 2
Dependent Claim
120 words
A PROCESS FOR SEPARATING A FLUID HYDROCARBON MIXTURE COMPRISING THE ISOMERS, ANTHRACENE AND PHENANTHRENE, WHICH COMPRISES CONTACTING SAID MIXTURE WITH A SOLID 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., WHEREBY THERE IS OBTAINED A RICH ADSORBENT ENRICHED IN THE MOST READILY ADSORBED OF SAID ISOMERS AND A FLUID RAFFINATE PRODUCT ENRICHED IN THE LEAST READILY ADSORBED OF SAID ISOMERS; AND TREATING SAID RICH ADSORBENT TO REMOVE THE MOST READILY ADSORBED ISOMER THEREFROM AS A FLUID EXTRACT PRODUCT, THE PROPORTIONS OF ANTHRACENE AND PHENANTHRENE IN SAID EXTRACT PRODUCT BEING DIFFERENT FROM THE PROPORTIONS OF ANTHRACENE AND PHENANTHRENE IN SAID RAFFINATE PRODUCT.
References Cited (Backward Citations)
US2858901A
Cited
US2834429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |