US2998467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paraffin hydrocarbon isomerization catalyst and process
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1959-12-31
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Granted: 1961-08-29
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 George R Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:15
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2786; C07C5/2789
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
66 words
A PROCESS FOR CONVERTING A PARAFFIN HYDROCARBON OF FROM 5 TO 7 CARBON ATOMS TO A MORE HIGHLY BRANCHED ISOMER WHICH COMPRISES CONTACTING SAID HYDROCARBON IN THE LIQUID PHASE WITH A CATALYST COMPRISING AN ALUMINUM HALIDE AND A RARE EARTH OXIDE SELECTED FROM THE CLASS CONSISTING OF LANTHANUM OXIDE, CERIUM OXIDE, NEODYMIUM OXIDE AND DIDYMIUM OXIDE, AT TEMPERATURES IN THE RANGE OF FROM 40* TO 150*F.
Claim 2
Dependent Claim
66 words
A PROCESS FOR CONVERTING A PARAFFIN HYDROCARBON OF FROM 5 TO 7 CARBON ATOMS TO A MORE HIGHLY BRANCHED ISOMER WHICH COMPRISES CONTACTING SAID HYDROCARBON IN THE LIQUID PHASE WITH A CATALYST COMPRISING AN ALUMINUM HALIDE AND A RARE EARTH OXIDE SELECTED FROM THE CLASS CONSISTING OF LANTHANUM OXIDE, CERIUM OXIDE, NEODYMIUM OXIDE AND DIDYMIUM OXIDE, AT TEMPERATURES IN THE RANGE OF FROM 40* TO 150*F.
Claim 3
Dependent Claim
30 words
AN ISOMERIZATION CATALYST COMPRISING A MIXTURE OF AN ALUMINUM HALIDE AND A RARE EARTH OXIDE SELECTED FROM THE CLASS CONSISTING OF LANTHANUM OXIDE, CERIUM OXIDE, NEODYMIUM OXIDE, AND DIDYMIUM OXIDE.
Claim 4
Dependent Claim
30 words
AN ISOMERIZATION CATALYST COMPRISING A MIXTURE OF AN ALUMINUM HALIDE AND A RARE EARTH OXIDE SELECTED FROM THE CLASS CONSISTING OF LANTHANUM OXIDE, CERIUM OXIDE, NEODYMIUM OXIDE, AND DIDYMIUM OXIDE.
References Cited (Backward Citations)
US2388081A
Cited
US2399354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |