US2956089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of isoparaffins differing in degree of branching with zeolitic molecular sieves
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-11-12
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Granted: 1960-10-11
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Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Mattox William Judson
- 👤 Jr Charles Newton Kimberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:49
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; C07C7/13; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
AN IMPROVED PROCESS FOR SEPARATING SINGLY BRANCHED FROM MORE HIGHLY BRANCHED CHAIN AND CYCLIC HYDROCARBONS WHICH COMPRISES CONTACTING A MIXTURE OF SAID HYDROCARBONS WITH A CRYSTALLINE METALLIC ALUMINO-SILICATE ADSORBENT HAVING A UNIFORM PORE OPENING OF ABOUT 6 TO 15 ANGSTROM UNITS AT A TEMPERATURE OF ABOUT 150* TO 500*F. IN AN ADSORPTION ZONE, SELECTIVELY ADSORBING SAID SINGLY BRANCHED HYDROCARBON, AND WITHDRAWING A STREAM SUBSTANTIALLY POORER IN SAID SINGLY BRANCHED HYDROCARBON FROM SAID ZONE.
Claim 2
Dependent Claim
73 words
AN IMPROVED PROCESS FOR SEPARATING SINGLY BRANCHED FROM MORE HIGHLY BRANCHED CHAIN AND CYCLIC HYDROCARBONS WHICH COMPRISES CONTACTING A MIXTURE OF SAID HYDROCARBONS WITH A CRYSTALLINE METALLIC ALUMINO-SILICATE ADSORBENT HAVING A UNIFORM PORE OPENING OF ABOUT 6 TO 15 ANGSTROM UNITS AT A TEMPERATURE OF ABOUT 150* TO 500*F. IN AN ADSORPTION ZONE, SELECTIVELY ADSORBING SAID SINGLY BRANCHED HYDROCARBON, AND WITHDRAWING A STREAM SUBSTANTIALLY POORER IN SAID SINGLY BRANCHED HYDROCARBON FROM SAID ZONE.
Claim 3
Dependent Claim
56 words
IN A LIGHT NAPHTHA ISOMERIZATION PROCESS WHEREIN A LIGHT VIRGIN NAPHTHA IS ISOMERIZED TO PRODUCE A PRODUCT STREAM COMPRISING METHYL PENTANES AND DIMETHYL BUTANES, THE IMPROVEMENT WHICH COMPRISES PASSING SAID STREAM THROUGH A BED OF A METALLIC CRYSTALLINE ALUMINOSILICATE HAVING A UNIFORM PORE DIAMETER OF 10 TO 13 ANGSTROMS, SEPARATING A METHYL PENTANE-RICH STREAM FROM A
Claim 4
Dependent Claim
56 words
IN A LIGHT NAPHTHA ISOMERIZATION PROCESS WHEREIN A LIGHT VIRGIN NAPHTHA IS ISOMERIZED TO PRODUCE A PRODUCT STREAM COMPRISING METHYL PENTANES AND DIMETHYL BUTANES, THE IMPROVEMENT WHICH COMPRISES PASSING SAID STREAM THROUGH A BED OF A METALLIC CRYSTALLINE ALUMINOSILICATE HAVING A UNIFORM PORE DIAMETER OF 10 TO 13 ANGSTROMS, SEPARATING A METHYL PENTANE-RICH STREAM FROM A
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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |