US2906702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of platinum catalysts
Assignee: Standard Oil Co
•
Filing: 1953-12-17
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Granted: 1959-09-29
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Expires: 1973-12-17
Abstract
No abstract record available.
Inventors
- 👤 Harry M Brennan
- 👤 Herman S Seelig
- 👤 Haar Roy W Vander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:24
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085; B; B01; B01J; B01J23/00; B01J23/90; B01J23/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN IMPROVEMENT IN A CYCLIC HYDROCARBON CONVERSION PROCESS, WHICH PROCESS COMPRISES CONTACTING A HYDROCARBON CHANGING STOCK UNDER CONVERSION CONDITIONS WITH AN ALUMINA-SUPPORTED PLATINUM CATALYST, WHEREBY SAID CATALYST ACCUMULATES CARBON AND FALLS IN ACTIVITY AND SELECTIVITY BELOW IT INITIAL LEVEL, THER AFTER WITHDRAWING SAID CATALYST FROM SAID CONVERSIONS CONDITIONS, REACTIVATING SAID CATALYST AND RETURNING THE REACTIVATED CATALYST TO SAID CONCONVERSION CONDITIONS, WHICH IMPROVEMENT COMPRISES EFFECTING SAID REACTIVATION BY BURNING SAID CARBON FROM THE SAID CATALYST, EXPOSING THE SAID CATALYST TO CONTACT AT ELEVATED TEMPERATURE WITH A TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF HALOGENS AND SUBSTANCES AFFORDING A HALOGEN AT SAID ELEVATED TEMPERATURE, AND CONTACTING THE HALOGENTREATED CATALYST WITH AN AQUEOUS MEDIUM, WHEREBY LABILE HALOGEN IS REMOVED THEREFROM.
Claim 2
Dependent Claim
118 words
AN IMPROVEMENT IN A CYCLIC HYDROCARBON CONVERSION PROCESS, WHICH PROCESS COMPRISES CONTACTING A HYDROCARBON CHANGING STOCK UNDER CONVERSION CONDITIONS WITH AN ALUMINA-SUPPORTED PLATINUM CATALYST, WHEREBY SAID CATALYST ACCUMULATES CARBON AND FALLS IN ACTIVITY AND SELECTIVITY BELOW IT INITIAL LEVEL, THER AFTER WITHDRAWING SAID CATALYST FROM SAID CONVERSIONS CONDITIONS, REACTIVATING SAID CATALYST AND RETURNING THE REACTIVATED CATALYST TO SAID CONCONVERSION CONDITIONS, WHICH IMPROVEMENT COMPRISES EFFECTING SAID REACTIVATION BY BURNING SAID CARBON FROM THE SAID CATALYST, EXPOSING THE SAID CATALYST TO CONTACT AT ELEVATED TEMPERATURE WITH A TREATING AGENT SELECTED FROM THE GROUP CONSISTING OF HALOGENS AND SUBSTANCES AFFORDING A HALOGEN AT SAID ELEVATED TEMPERATURE, AND CONTACTING THE HALOGENTREATED CATALYST WITH AN AQUEOUS MEDIUM, WHEREBY LABILE HALOGEN IS REMOVED THEREFROM.
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |