US3197416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of removing metallic contaminants from hydrocarbon cracking catalysts
Assignee: Princeton Chemical Research Inc
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Filing: 1963-03-15
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Granted: 1965-07-27
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Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Richard I Bergman
- 👤 Norman W Frisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:48
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/20; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS FOR REMOVING METALLIC CONTAMINANTS SELECTED FROMTHE GROUP CONSISTING OF IRON, NICKEL AND VANADIUM CATIONS, FROM A SILICA-CONTAINING CRACKING CATALYST SELECTED FROMTHE GROUP CONSISTING OF SILICA-ALUMINA AND SILICA-LMAGNESIA CATALYST, WHICH COMPRISES TREATING SAID CATALYST WITH A MIXTURE OF A REDUCING AGENT AND A CHELATING AGENT AND INTIMATELY CONTACTING SAID CATALYST IN AN AQUEOUS REACTION MEDIUM MAINTAINED AT A PH OF FROM 4 TO 10 WITH A MIXTURE OF ANIONIC AND CATIONIC EXCHANGE RESINS, SAID MIXTURE COMPRISING FROM 2% TO 85% BY WEIGHT OF THE ANIONIC ION EXCHANGE RESIN WITH THE BALANCE ESSENTIALLY THE CATIONIC ION EXCHANGE RESIN.
Claim 2
Dependent Claim
98 words
A PROCESS FOR REMOVING METALLIC CONTAMINANTS SELECTED FROMTHE GROUP CONSISTING OF IRON, NICKEL AND VANADIUM CATIONS, FROM A SILICA-CONTAINING CRACKING CATALYST SELECTED FROMTHE GROUP CONSISTING OF SILICA-ALUMINA AND SILICA-LMAGNESIA CATALYST, WHICH COMPRISES TREATING SAID CATALYST WITH A MIXTURE OF A REDUCING AGENT AND A CHELATING AGENT AND INTIMATELY CONTACTING SAID CATALYST IN AN AQUEOUS REACTION MEDIUM MAINTAINED AT A PH OF FROM 4 TO 10 WITH A MIXTURE OF ANIONIC AND CATIONIC EXCHANGE RESINS, SAID MIXTURE COMPRISING FROM 2% TO 85% BY WEIGHT OF THE ANIONIC ION EXCHANGE RESIN WITH THE BALANCE ESSENTIALLY THE CATIONIC ION EXCHANGE RESIN.
References Cited (Backward Citations)
GB880622A
Cited
US3122511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |