Patent US3265750A successfully refreshed from Google Patents.
US3265750A
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Separation of olefins from paraffins
Assignee: Union Carbide Corp
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Filing: 1964-03-31
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Granted: 1966-08-09
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Expires: 1984-03-31
Abstract
No abstract record available.
Inventors
- 👤 David W Peck
- 👤 Robert R Gentry
- 👤 Henry E Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:40
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03; C07; C07C; C07C7/00; C07C7/12; C07C7/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE METHOD FOR SEPARATING AN OLEFINICALLY-UNSATURATED HYDROCARBON FROM A MIXTURE CONTAINING SAID UNSATURATED HYDROCARBON AND A MORE SATURATED HYDROCARBON WHICH COMPRISES THE STEPS OF (1) CONTAINING SAID MIXTURE IN THE LIQUID PHASE WITH A BED OF AN AT LEAST PARTIALLY DEHYDRATED MOLECULAR SIEVE HAVING A SUBSTANTIALLY UNIFORM PORE SIZE OF DIMENSIONS SUFFICIENT TO PERMIT BENZENE TO PASS INTO THE PORES THEREOF, (2) THEREAFTER CONTACTING SAID SIEVE CONTAINING ADSORBED OLEFINICALLY-UNSATURATED HYDROCARBON WITH A PARAFFIN HAVING A BOILING POINT AT LEAST 30*C. BELOW THAT OF THE UNADSORBED HYDROCARBON TO REMOVE UNADSORBED HYDROCARBONS FROM SAID BED, AND (3) DESORBING THE ADSORBED HYDROCARBON FROM SAID SIEVE BED BY CONTACTING SAID SIEVE BED WITH A POLAR LIQUID.
Claim 2
Independent Claim
112 words
THE METHOD FOR SEPARATING AN OLEFINICALLY-UNSATURATED HYDROCARBON FROM A MIXTURE CONTAINING SAID UNSATURATED HYDROCARBON AND A MORE SATURATED HYDROCARBON WHICH COMPRISES THE STEPS OF (1) CONTAINING SAID MIXTURE IN THE LIQUID PHASE WITH A BED OF AN AT LEAST PARTIALLY DEHYDRATED MOLECULAR SIEVE HAVING A SUBSTANTIALLY UNIFORM PORE SIZE OF DIMENSIONS SUFFICIENT TO PERMIT BENZENE TO PASS INTO THE PORES THEREOF, (2) THEREAFTER CONTACTING SAID SIEVE CONTAINING ADSORBED OLEFINICALLY-UNSATURATED HYDROCARBON WITH A PARAFFIN HAVING A BOILING POINT AT LEAST 30*C. BELOW THAT OF THE UNADSORBED HYDROCARBON TO REMOVE UNADSORBED HYDROCARBONS FROM SAID BED, AND (3) DESORBING THE ADSORBED HYDROCARBON FROM SAID SIEVE BED BY CONTACTING SAID SIEVE BED WITH A POLAR LIQUID.
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |