Patent US4858930A successfully refreshed from Google Patents.
Patent US3042730A successfully refreshed from Google Patents.
US3042730A
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Regenerative isomerization technique
Assignee: Standard Oil Co
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Filing: 1959-08-07
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Granted: 1962-07-03
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Expires: 1979-08-07
Abstract
No abstract record available.
Inventors
- 👤 Clifton N Sechrist
- 👤 Joseph F Jennings
- 👤 Joe T Kelly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:31
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/271; C07C5/2718; C07C5/2721; B; B01; B01J; B01J27/00; B01J27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN AN ISOMERIZATION SYSTEM WHERE A PARAFFIN HAVING 4 TO 7 CARBON ATOMS IS CONTACTED WITH AN AICI3-ON-ADSORBENT CATALYST UNDER ISOMERIZATION CONVERSION CONDITIONS WHEREIN THE CATALYST DECLINES IN ACTIVITY DURING ONSTREAM PERIODS, THE METHOD OF AT LEAST PARTIALLY RESTORING SAID CATALYST SCTIVITY WHICH COMPRISES CONTACTING THE CATALYST WITH AN INERT HYDROCARBON AT A TEMPERATURE IN THE RANGE OF ABOUT 100 TO 300*F. TO REMOVE PARAFFINS, PROMOTER AND DELETERIOUS DEPOSITS FROM THE CATALYST, TREATING SAID CONTACTED CATALYST WITH A SOLUTION OF ALUMINUM CHLORIDE IN AN INERT HYDROCARBON AT A TEMPERATURE HIGHER THAN CONVERSION TEMPERATURE BUT IN SAID 100 TO 300*F. RANGE, AND COOLING THE CATALYST TO A CONVERSION TEMPERATURE IN THE RANGE OF 60 TO 180*F. IN THE PRESENCE OF THE ALUMINUM CHLORIDE-CONTAINING INERT HYDROCARBON.
Claim 2
Dependent Claim
124 words
IN AN ISOMERIZATION SYSTEM WHERE A PARAFFIN HAVING 4 TO 7 CARBON ATOMS IS CONTACTED WITH AN AICI3-ON-ADSORBENT CATALYST UNDER ISOMERIZATION CONVERSION CONDITIONS WHEREIN THE CATALYST DECLINES IN ACTIVITY DURING ONSTREAM PERIODS, THE METHOD OF AT LEAST PARTIALLY RESTORING SAID CATALYST SCTIVITY WHICH COMPRISES CONTACTING THE CATALYST WITH AN INERT HYDROCARBON AT A TEMPERATURE IN THE RANGE OF ABOUT 100 TO 300*F. TO REMOVE PARAFFINS, PROMOTER AND DELETERIOUS DEPOSITS FROM THE CATALYST, TREATING SAID CONTACTED CATALYST WITH A SOLUTION OF ALUMINUM CHLORIDE IN AN INERT HYDROCARBON AT A TEMPERATURE HIGHER THAN CONVERSION TEMPERATURE BUT IN SAID 100 TO 300*F. RANGE, AND COOLING THE CATALYST TO A CONVERSION TEMPERATURE IN THE RANGE OF 60 TO 180*F. IN THE PRESENCE OF THE ALUMINUM CHLORIDE-CONTAINING INERT HYDROCARBON.
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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |