US3146279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective isomerization process
Assignee: Sinclair Research Inc
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Filing: 1962-04-04
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Granted: 1964-08-25
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Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 James P Gallagher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:40
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/08; B01J29/10; B01J29/12; B01J29/123; C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2791; Y; Y10; Y10S; Y10S502/00; Y10S502/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
A METHOD FOR ISOMERIZING A NORMAL PARAFFIN HYDROCARBON HAVING AT LEAST SEVEN CARBON ATOMS WHILE SUPPRESSING HYDROCRACKING WHICH COMPRISES CONTACTING SAID HYDROCARBON IN A CONVERSION ZONE UNDER ISOMERIZATION CONDITIONS IN THE PRESENCE OF HYDROGEN, WITH A CATALYTIC PROMOTING AMOUNT OF A HYDROGENATION-DEHYDROGENATION METAL-CONTAINING CRYSTALLINE ALUMINO-SILICATE CATALYST HAVING A UNIFORM PORE DIAMETER OF AT LEAST ABOUT 9 ANGSTROMS, AND HAVING ABOUT 20 TO 25 WEIGHT PERCENT OF AN ALKALINE METAL OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND SODIUM, SAID ALKALINE METAL OXIDE HAVING A PERCENTAGE OF CALCIUM DIRECTLY PROPORTIONAL TO THE CARBON CHAIN LENGTH OF THE NORMAL PARAFFIN HYDROCARBON AND IS APPROXIMATELY EQUAL TO (Y-7)/0.1R WHERE Y IS THE CARBON CHAIN LENGTH OF SAID HYDROCARBON AND R IS A NUMBER FROM ABOUT 0.5 TO 2, THE BALANCE BEING ESSENTIALLY SODIUM, AND RECOVERING AN ISOMERIZED HYDROCARBON PRODUCT HAVING ESSENTIALLY THE SAME MOLECULAR WEIGHT AS SAID NORMAL PARAFFIN HYDROCARBON.
Claim 2
Independent Claim
151 words
A METHOD FOR ISOMERIZING A NORMAL PARAFFIN HYDROCARBON HAVING AT LEAST SEVEN CARBON ATOMS WHILE SUPPRESSING HYDROCRACKING WHICH COMPRISES CONTACTING SAID HYDROCARBON IN A CONVERSION ZONE UNDER ISOMERIZATION CONDITIONS IN THE PRESENCE OF HYDROGEN, WITH A CATALYTIC PROMOTING AMOUNT OF A HYDROGENATION-DEHYDROGENATION METAL-CONTAINING CRYSTALLINE ALUMINO-SILICATE CATALYST HAVING A UNIFORM PORE DIAMETER OF AT LEAST ABOUT 9 ANGSTROMS, AND HAVING ABOUT 20 TO 25 WEIGHT PERCENT OF AN ALKALINE METAL OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND SODIUM, SAID ALKALINE METAL OXIDE HAVING A PERCENTAGE OF CALCIUM DIRECTLY PROPORTIONAL TO THE CARBON CHAIN LENGTH OF THE NORMAL PARAFFIN HYDROCARBON AND IS APPROXIMATELY EQUAL TO (Y-7)/0.1R WHERE Y IS THE CARBON CHAIN LENGTH OF SAID HYDROCARBON AND R IS A NUMBER FROM ABOUT 0.5 TO 2, THE BALANCE BEING ESSENTIALLY SODIUM, AND RECOVERING AN ISOMERIZED HYDROCARBON PRODUCT HAVING ESSENTIALLY THE SAME MOLECULAR WEIGHT AS SAID NORMAL PARAFFIN HYDROCARBON.
References Cited (Backward Citations)
US2971903A
Cited
US2971904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |