US3374183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copper oxide-alumina catalyst composition
Assignee: Ethyl Corp
•
Filing: 1961-03-30
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Granted: 1968-03-19
•
Expires: 1981-03-30
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:59
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/72
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
A METHOD FOR PRODUCING A CATALYST, WHICH COMPRISES COMMINGLING AQUEOUS AMMONIA AND A CARBONATE OF COPPER, IMPREGATING AN ALUMINA BASE WITH THE RESULTANT MIXTURE, DRYING THE IMPREGNATED BASE TO COMPOSITE WITH THE BASE A COMPOUND OF COPPER AND THEN CALCINING THE DRIED BASE TO FORM A COMPOSITE OF ALUMINA AND AN OXIDE OF COPPER.
Claim 2
Independent Claim
54 words
A METHOD FOR PRODUCING A CATALYST, WHICH COMPRISES COMMINGLING AQUEOUS AMMONIA AND A CARBONATE OF COPPER, IMPREGATING AN ALUMINA BASE WITH THE RESULTANT MIXTURE, DRYING THE IMPREGNATED BASE TO COMPOSITE WITH THE BASE A COMPOUND OF COPPER AND THEN CALCINING THE DRIED BASE TO FORM A COMPOSITE OF ALUMINA AND AN OXIDE OF COPPER.
Claim 3
Dependent Claim
150 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO CATALYZE THE OXIDATION OF EXHAUST GASES, SAID COMPOSITION CONSISTING ESSENTIALLY OF TRANSITION ALUMINA IMPREGNATED WITH 0.5 TO 25 PERCENT BY WEIGHT OF COPPER IN OXIDE FORM, SAID COPPER OXIDE BEING CHARACTERIZED BY HAVING BEEN FORMED BY HEATING A RESIDUAL PRODUCT FORMED IN TURN BY IMPREGNATING A TRANSITION ALUMINA OF THE ACTIVATED TYPE AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM AND A SILICA CONTENT OF 0.01 TO ABOUT 5 PERCENT WITH A DEEPLY VIOLET-COLORED SOLUTION FORMED BY REACTING, IN THE PRESENCE OF WATER, AN ESSENTIALLY INSOLUBLE COPPER COMPOUND SELECTED FROM THE GLASS CONSISTING OF COPPER OXIDES, HYDROXIDE AND COPPER CARBONATES WITH AN AMMONIACAL REAGENT SELECTED FROM THE CLASS CONSISTING OF AMMONIA, AMMONIUM HYDROXIDE AND AMMONIUM CARBONATE, SAID SOLUTION BEING CHARACTERIZED IN THAT SUBSTANTIALLY THE ONLY ANIONS PRESENT ARE SELECTED FROM THE CLASS CONSISTING OF CARBONATE ANIONS AND HYDROXIDE ANIONS.
Claim 4
Dependent Claim
150 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO CATALYZE THE OXIDATION OF EXHAUST GASES, SAID COMPOSITION CONSISTING ESSENTIALLY OF TRANSITION ALUMINA IMPREGNATED WITH 0.5 TO 25 PERCENT BY WEIGHT OF COPPER IN OXIDE FORM, SAID COPPER OXIDE BEING CHARACTERIZED BY HAVING BEEN FORMED BY HEATING A RESIDUAL PRODUCT FORMED IN TURN BY IMPREGNATING A TRANSITION ALUMINA OF THE ACTIVATED TYPE AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM AND A SILICA CONTENT OF 0.01 TO ABOUT 5 PERCENT WITH A DEEPLY VIOLET-COLORED SOLUTION FORMED BY REACTING, IN THE PRESENCE OF WATER, AN ESSENTIALLY INSOLUBLE COPPER COMPOUND SELECTED FROM THE GLASS CONSISTING OF COPPER OXIDES, HYDROXIDE AND COPPER CARBONATES WITH AN AMMONIACAL REAGENT SELECTED FROM THE CLASS CONSISTING OF AMMONIA, AMMONIUM HYDROXIDE AND AMMONIUM CARBONATE, SAID SOLUTION BEING CHARACTERIZED IN THAT SUBSTANTIALLY THE ONLY ANIONS PRESENT ARE SELECTED FROM THE CLASS CONSISTING OF CARBONATE ANIONS AND HYDROXIDE ANIONS.
References Cited (Backward Citations)
US2730429A
Cited
US1589644A
Cited
US1937728A
Cited
US2034077A
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US2696475A
Cited
US2800518A
Cited
US2847475A
Cited
US3133029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |