Patent US3120569A successfully refreshed from Google Patents.
US3120569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the isomerization of alkyl benzenes in the presence of an iodidecontaining compound
Assignee: California Research LLC
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Filing: 1960-12-19
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Granted: 1964-02-04
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Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Clark J Egan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:46
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/271; C07C5/2713
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR THE ISOMERIZATION OF A NON-EQUILIBRIUM XYLENE FEED, WHICH COMPRISES CONTACTING SAID FEED IN AN ISOMERIZATION ZONE, IN THE PRESENCE OF HYDROGEN AND AT LEAST ONE ORGANIC IODIDE COMPOUND CAPABLE OF DECOMPOSING UNDER THE CONDITIONS OF TEMPERATURE AND PRESSURE IN SAID ISOMERIZATION ZONE, WITH A CATALYST COMPRISING A ING UNDER THE CONDITIONS OF TEMPERATURE AND PRESSURE IN SAID ISOMERIZATION ZONE, WITH A CATALYST COMPRISING A HYDROGENATION COMPONENT SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFIDE AND COBALT SULFIDE DISPOSED ON AN ACTIVE SILICEOUS CRACKING CATALYST SUPPORT AT AN ELEVATED TEMPERATURE BELOW ABOUT 800*F. AND AT AN ELEVATED PRESSURE ABOUT 300 P.S.I.G.
Claim 2
Dependent Claim
103 words
A PROCESS FOR THE ISOMERIZATION OF A NON-EQUILIBRIUM XYLENE FEED, WHICH COMPRISES CONTACTING SAID FEED IN AN ISOMERIZATION ZONE, IN THE PRESENCE OF HYDROGEN AND AT LEAST ONE ORGANIC IODIDE COMPOUND CAPABLE OF DECOMPOSING UNDER THE CONDITIONS OF TEMPERATURE AND PRESSURE IN SAID ISOMERIZATION ZONE, WITH A CATALYST COMPRISING A ING UNDER THE CONDITIONS OF TEMPERATURE AND PRESSURE IN SAID ISOMERIZATION ZONE, WITH A CATALYST COMPRISING A HYDROGENATION COMPONENT SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFIDE AND COBALT SULFIDE DISPOSED ON AN ACTIVE SILICEOUS CRACKING CATALYST SUPPORT AT AN ELEVATED TEMPERATURE BELOW ABOUT 800*F. AND AT AN ELEVATED PRESSURE ABOUT 300 P.S.I.G.
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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |