US2951804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of reformate charge stocks using activated alumina impregnated with alkali or alkaline earth metal hydroxides
Assignee: Houdry Process Corp
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Filing: 1957-10-22
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Granted: 1960-09-06
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Expires: 1977-10-22
Abstract
No abstract record available.
Inventors
- 👤 Andre L Juliard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:49
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; C10G25/00; C10G25/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE METHOD OF UPGRADING HYDROCARBON CHARGE STOCKS TO BE REFORMED IN CONTACT WITH PLATINUM ON ALUMINA CATALYST AND CONTAINING DEACTIVATING AMOUNTS OF CATALYST CONTAMINANTS COMPRISING TREATING SUCH A CHARGE STOCK AT ADSORPTIVE CONDITIONS WITH AN ADSORPTIVE AGENT COMPRISING BASIC ALUMINA HAVING A PH VALUE IN THE RANGE OF 6 TO 8, SAID ADSORPTIVE AGENT HAVING BEEN PREPARED BY IMPREGNATING ACTIVATED ALUMINA WITH AN AQUEOUS SOLUTION OF ALKALI METAL HYDROXIDE TO DEPOSIT THEREON ALKALI METAL HYDROXIDE IN EXCESS OF 1.0% BY WEIGHT OF SAID ALUMINA, SUBSEQUENTLY WATER WASHING SAID IMPREGNATED MATERIAL, TO REMOVE ALKALI METAL HYDROXIDE IN EXCESS OF 0.8 WEIGHT PERCENT OF THE TREATED ALUMINA AND ESTABLISHING A PH OF THE ALUMINA PLUS ALKALI METAL HYDROXIDE IN THE RANGE OF 6 TO 8, AND THEREAFTER DRYING TO REMOVE SUBSTANTIALLY ALL FREE WATER.
Claim 2
Independent Claim
132 words
THE METHOD OF UPGRADING HYDROCARBON CHARGE STOCKS TO BE REFORMED IN CONTACT WITH PLATINUM ON ALUMINA CATALYST AND CONTAINING DEACTIVATING AMOUNTS OF CATALYST CONTAMINANTS COMPRISING TREATING SUCH A CHARGE STOCK AT ADSORPTIVE CONDITIONS WITH AN ADSORPTIVE AGENT COMPRISING BASIC ALUMINA HAVING A PH VALUE IN THE RANGE OF 6 TO 8, SAID ADSORPTIVE AGENT HAVING BEEN PREPARED BY IMPREGNATING ACTIVATED ALUMINA WITH AN AQUEOUS SOLUTION OF ALKALI METAL HYDROXIDE TO DEPOSIT THEREON ALKALI METAL HYDROXIDE IN EXCESS OF 1.0% BY WEIGHT OF SAID ALUMINA, SUBSEQUENTLY WATER WASHING SAID IMPREGNATED MATERIAL, TO REMOVE ALKALI METAL HYDROXIDE IN EXCESS OF 0.8 WEIGHT PERCENT OF THE TREATED ALUMINA AND ESTABLISHING A PH OF THE ALUMINA PLUS ALKALI METAL HYDROXIDE IN THE RANGE OF 6 TO 8, AND THEREAFTER DRYING TO REMOVE SUBSTANTIALLY ALL FREE WATER.
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |