Patent US3280213A successfully refreshed from Google Patents.
US3280213A
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Liquid phase isomerization process
Assignee: Standard Oil Co
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Filing: 1964-05-13
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Granted: 1966-10-18
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Expires: 1984-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jr George C Mullen
- 👤 Jr Karl A Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:13
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/271; C07C5/2718; C07C5/2721
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A REGENERATIVE LIQUID-PHASE ISOMERIZATION PROCESS WHICH COMPRISES CONTACTING AN ISOMERIZABLE HYDROCARBON FEED PROCESS STREAM WITH SOLID CATALYST CONSISTING ESSENTIALLY OF ALUMINUM HALIDE POSITIONED ON SURFACE-HYDROXYLCONTAINING ADSORBENT SOLID AND ASSOCIATED WITH HYDROGEN HALIDE, RECOVERING IDOMERIZED PRODUCT, PERIODICALLY INTERRUPTING CONTACTING OF SAID FEED WITH A PORTION OF SAID CATALYST AND ISOLATING SAID PORTION OF CATALYST FROM THE PROCESS STREAM AND FROM THE REMAINDER OF SAID CATALYST, CONTACTING SAID ISOLATED CATALYST WITH HYDROGEN TO EFFECT REGENERATION WHEREBY THE ACTIVITY OF SAID ISOLATED CATALYST FOR ISONERIZATION IS INCREASED, AND RETURNING SAID ISOLATED CATALYST TO SAID PROCESS STREAM INTERMEDIATE CONTACTING OF SAID PROCESS STREAM WITH A FIRST PART AND A SECOND PART OF SAID REMAINDER OF CATALYST.
Claim 2
Dependent Claim
112 words
A REGENERATIVE LIQUID-PHASE ISOMERIZATION PROCESS WHICH COMPRISES CONTACTING AN ISOMERIZABLE HYDROCARBON FEED PROCESS STREAM WITH SOLID CATALYST CONSISTING ESSENTIALLY OF ALUMINUM HALIDE POSITIONED ON SURFACE-HYDROXYLCONTAINING ADSORBENT SOLID AND ASSOCIATED WITH HYDROGEN HALIDE, RECOVERING IDOMERIZED PRODUCT, PERIODICALLY INTERRUPTING CONTACTING OF SAID FEED WITH A PORTION OF SAID CATALYST AND ISOLATING SAID PORTION OF CATALYST FROM THE PROCESS STREAM AND FROM THE REMAINDER OF SAID CATALYST, CONTACTING SAID ISOLATED CATALYST WITH HYDROGEN TO EFFECT REGENERATION WHEREBY THE ACTIVITY OF SAID ISOLATED CATALYST FOR ISONERIZATION IS INCREASED, AND RETURNING SAID ISOLATED CATALYST TO SAID PROCESS STREAM INTERMEDIATE CONTACTING OF SAID PROCESS STREAM WITH A FIRST PART AND A SECOND PART OF SAID REMAINDER OF CATALYST.
References Cited (Backward Citations)
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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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |