US3303142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst for removal of mercaptans from hydrocarbon oils
Assignee: Shell USA Inc
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Filing: 1964-12-03
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Granted: 1967-02-07
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Expires: 1984-12-03
Abstract
No abstract record available.
Inventors
- 👤 Maze Herve
- 👤 Mauborgne Jacques
- 👤 Reinbold Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:01
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0255; B01J31/0257; B01J31/0258; B01J31/16; B01J31/1616; B01J31/18; B01J31/1805; B01J31/22; B01J31/2204; B01J31/2208; B01J31/2226; B01J31/223; B01J31/2243; B01J37/00; B01J37/02; B01J37/0201; B01J37/0205; B01J21/00; B01J21/18; B01J2231/00; B01J2231/70; B01J2531/00; B01J2531/10; B01J2531/16; B01J27/00; B01J27/06; B01J27/08; B01J27/122; B01J31/26; B01J31/28; B01J31/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES IMPREGNATING ACTIVE CARBON WITH COPPER BY CONTACTING THE CARBON WITH AN AQUEOUS SOLUTION OF AT LEAST ONE CUPRIC SALT, DRYING THE IMPREGNATED CARBON, CONTACTING THE IMPREGNATED CARBON WITH AN AQUEOUS SOLUTION COMPRISING 0.5-10% BY WEIGHT EACH OF AMMONIUM PHOSPHATE AND A COMPLEXING AGENT SELECTED FROM ALKYL AMINES, ALKANOL AMINES, ALKANOIC ACIDS, AND AMINO ACIDS, AND DRYING AT A TEMPERATURE OF ABOUT 110-120*C. TO A WATER CONTENT OF 5-7%, BY WEIGHT.
Claim 2
Independent Claim
78 words
A METHOD OF PREPARING A CATALYST WHICH COMPRISES IMPREGNATING ACTIVE CARBON WITH COPPER BY CONTACTING THE CARBON WITH AN AQUEOUS SOLUTION OF AT LEAST ONE CUPRIC SALT, DRYING THE IMPREGNATED CARBON, CONTACTING THE IMPREGNATED CARBON WITH AN AQUEOUS SOLUTION COMPRISING 0.5-10% BY WEIGHT EACH OF AMMONIUM PHOSPHATE AND A COMPLEXING AGENT SELECTED FROM ALKYL AMINES, ALKANOL AMINES, ALKANOIC ACIDS, AND AMINO ACIDS, AND DRYING AT A TEMPERATURE OF ABOUT 110-120*C. TO A WATER CONTENT OF 5-7%, BY WEIGHT.
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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |