Patent US2992285A successfully refreshed from Google Patents.
US2992285A
Expired / Lapsed
US
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Naphtha isomerization process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-07-16
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Granted: 1961-07-11
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Expires: 1979-07-16
Abstract
No abstract record available.
Inventors
- 👤 Jr William Floyd Arey
- 👤 Draeger Kenneth Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:07
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2786; C07C5/2789; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/952
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN IMPROVED PROCESS OR ISOMERIZING PARAFIN HYDROCARBONS HAVING FROM 5 TO 6 CCARBON ATOMS TO THE CORRESPONDING MORE HIGHLY BRANCHED ISOMERS WHICH COMPRISES CONTACTING SAID PARAFFIN HYDROCARBONS, IN ADMIXTURE WITH FROM 10 TO 20 VOLUME PERCENT OF NAPHTHENIC HYDROCARBONS, IN THE LIQUID PHASE WITH A CATALYST COMPRISING ALUMINUN BRONIDE IN A REACTION ZONE MAINTAINED AT A CONTROLLED TEMPERATURE IN THE RANGE OF 50* TO 150*F. AND A PRESSURE OF FROM ABOUT 5 TO 500 P.S.I.G., AND IN THE PRESENCE OF AN ADDED HYDROGEN HALIDE PROMOTER, CONDUCTING SAID HYDROCARBONS THROUGH THE SAID RREACTION ZONE CONTAINING THE SAID CATALYST, AND INTRODUCING INTO SAID REACTION ZONE A CRACKING SUPPRESSOR SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND ISOBUTANE, SAID CRACKING SUPPRESSOR BEING INTRODUCED INTO SAID REACCTION ZONE SOLELY AT A POINT WHEREIN AT LEAST 85 PERCENT CONVERSION OF SAID PARAFFINIC HYDROCARBONS TO ORE HIGHLY BRANCHED ISOMERS HAS OCCURRED.
Claim 2
Dependent Claim
145 words
AN IMPROVED PROCESS OR ISOMERIZING PARAFIN HYDROCARBONS HAVING FROM 5 TO 6 CCARBON ATOMS TO THE CORRESPONDING MORE HIGHLY BRANCHED ISOMERS WHICH COMPRISES CONTACTING SAID PARAFFIN HYDROCARBONS, IN ADMIXTURE WITH FROM 10 TO 20 VOLUME PERCENT OF NAPHTHENIC HYDROCARBONS, IN THE LIQUID PHASE WITH A CATALYST COMPRISING ALUMINUN BRONIDE IN A REACTION ZONE MAINTAINED AT A CONTROLLED TEMPERATURE IN THE RANGE OF 50* TO 150*F. AND A PRESSURE OF FROM ABOUT 5 TO 500 P.S.I.G., AND IN THE PRESENCE OF AN ADDED HYDROGEN HALIDE PROMOTER, CONDUCTING SAID HYDROCARBONS THROUGH THE SAID RREACTION ZONE CONTAINING THE SAID CATALYST, AND INTRODUCING INTO SAID REACTION ZONE A CRACKING SUPPRESSOR SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND ISOBUTANE, SAID CRACKING SUPPRESSOR BEING INTRODUCED INTO SAID REACCTION ZONE SOLELY AT A POINT WHEREIN AT LEAST 85 PERCENT CONVERSION OF SAID PARAFFINIC HYDROCARBONS TO ORE HIGHLY BRANCHED ISOMERS HAS OCCURRED.
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) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |