Patent US3207704A successfully refreshed from Google Patents.
US3207704A
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Catalyst compositions comprising manganese oxide promoted by titanium, tin or lead on alumina
Assignee: Ethyl Corp
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Filing: 1962-05-01
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Granted: 1965-09-21
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Expires: 1982-05-01
Abstract
No abstract record available.
Inventors
- 👤 Ruth E Stephens
- 👤 Jr Daniel A Hirschler
- 👤 Frances W Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:42
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/32; B01J23/34; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
134 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO SUBSTANTIALLY OXIDIZE THE UNBURNED HYDROCARBONS AND CARBON MONOXIDE CONSTITUENTS OF THE EXHAUST GAS OF INTERNAL COMBUSTION ENGINES, SAID COMPOSITIONS CONSISTING ESSENTIALLY OF A MJOR PORTION OF A TRANSITIONAL ALUMINA, AND MANGANESE OXIDE IN AMOUNT CORRESPONDING TO FROM ABOUT 0.5 TO ABOUT 25 PERCENT BY WEIGHT OF MANGANESE AS SAID OXIDE, SAID TRANSITIONAL ALUMINA COMPRISING FROM 10 TO ABOUT 85 PERCENT CHI, FROM 10 TO 85 PERCENT ALPHA ALUMNIA MONOHYDRATE AND FROM 5 TO 45 PERCENT AMORPHOUS FORMS OF ALUMINIA, SAID TRANSITIONAL ALUMINA FURTHER CHARACTERIZED BY HAVING A SILICA CONTENT OF FROM 0.02 TO ABOUT 5 PERCENT SILICA AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM, SAID COMPOSITION ADDITIONALLY CONTAINING FROM ABOUT 0.5 TO 10 PERCENT BY WEIGHT OF TITANIUM AS A PROMOTER METAL.
Claim 2
Dependent Claim
134 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO SUBSTANTIALLY OXIDIZE THE UNBURNED HYDROCARBONS AND CARBON MONOXIDE CONSTITUENTS OF THE EXHAUST GAS OF INTERNAL COMBUSTION ENGINES, SAID COMPOSITIONS CONSISTING ESSENTIALLY OF A MJOR PORTION OF A TRANSITIONAL ALUMINA, AND MANGANESE OXIDE IN AMOUNT CORRESPONDING TO FROM ABOUT 0.5 TO ABOUT 25 PERCENT BY WEIGHT OF MANGANESE AS SAID OXIDE, SAID TRANSITIONAL ALUMINA COMPRISING FROM 10 TO ABOUT 85 PERCENT CHI, FROM 10 TO 85 PERCENT ALPHA ALUMNIA MONOHYDRATE AND FROM 5 TO 45 PERCENT AMORPHOUS FORMS OF ALUMINIA, SAID TRANSITIONAL ALUMINA FURTHER CHARACTERIZED BY HAVING A SILICA CONTENT OF FROM 0.02 TO ABOUT 5 PERCENT SILICA AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM, SAID COMPOSITION ADDITIONALLY CONTAINING FROM ABOUT 0.5 TO 10 PERCENT BY WEIGHT OF TITANIUM AS A PROMOTER METAL.
Claim 3
Dependent Claim
134 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO SUBSTANTIALLY OXIDIZE THE UNBURNED HYDROCARBONS AND CARBON MONOXIDE CONSTITUENTS OF THE EXHAUST GAS OF INTERNAL COMBUSTION ENGINES, SAID COMPOSITION CONSITING ESSENTIALLY OF A MAJOR PORTION OF A TRANSITIONAL ALUMINIA, AND MANAGANESE OXIDE IN AMOUNT CORRESPONDING TO FROM ABOUT 0.5 TO ABOUT 25 PERCENT BY WEIGHT OF MANGANESE AS SAID OXIDE, SAID TRANSITIONAL ALUMINA COMPRISING FROM 10 TO ABOUT 85 PERCENT CHI, FROM 10 TO 85 PERCENT ALPHA ALUMINA MONOHYDRATE AND FROM 5 TO 45 PERCENT AMORPHOUS FORMS OF ALUMINA, SAID TRANSITIONAL ALUMINA FURTHER CHARACTERIZED BY HAVING A SLICIA CONTENT OF FROM 0.02 TO ABOUT 5 PERCENT SILICA AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM, SAID COMPOSITION ADDITIONALLY CONTAINING FROM ABOUT 0.5 TO 10 PERCENT BY WEIGHT OF TIN AS A PROMOTER METAL.
Claim 4
Dependent Claim
134 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO SUBSTANTIALLY OXIDIZE THE UNBURNED HYDROCARBONS AND CARBON MONOXIDE CONSTITUENTS OF THE EXHAUST GAS OF INTERNAL COMBUSTION ENGINES, SAID COMPOSITION CONSITING ESSENTIALLY OF A MAJOR PORTION OF A TRANSITIONAL ALUMINIA, AND MANAGANESE OXIDE IN AMOUNT CORRESPONDING TO FROM ABOUT 0.5 TO ABOUT 25 PERCENT BY WEIGHT OF MANGANESE AS SAID OXIDE, SAID TRANSITIONAL ALUMINA COMPRISING FROM 10 TO ABOUT 85 PERCENT CHI, FROM 10 TO 85 PERCENT ALPHA ALUMINA MONOHYDRATE AND FROM 5 TO 45 PERCENT AMORPHOUS FORMS OF ALUMINA, SAID TRANSITIONAL ALUMINA FURTHER CHARACTERIZED BY HAVING A SLICIA CONTENT OF FROM 0.02 TO ABOUT 5 PERCENT SILICA AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM, SAID COMPOSITION ADDITIONALLY CONTAINING FROM ABOUT 0.5 TO 10 PERCENT BY WEIGHT OF TIN AS A PROMOTER METAL.
Claim 5
Dependent Claim
134 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO SUBSTANTIALLY OXIDIZE THE UNBURNED HYDROCARBONS AND CARBON MONOXIDE CONSTITUENTS OF THE EXHAUST GAS OF INTERNAL COMBUSTION ENGINES, SAID COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A TRANSITIONAL ALUMINA, AND MANGANESE OXIDE IN AMOUNT CORRESPONDING TO FROM ABOUT 0.5 TO ABOUT 25 PERCENT BY WEIGHT OF MANGANESE AS SAID OXIDE, SAID TRANSITIONAL ALUMINA COMPRISING FROM 10 TO ABOUT 85 PERCENT CHI, FROM 10 TO 85 PERCENT ,ALPHA ALUMINA MONOHYDRATE AND FROM 5 TO 45 PERCENT AMORPHOUS FORMS OF ALUMINA, SAID TRANSITIONAL ALUMINA FURTHER CHARACTERIZED BY HAVING A SILICA CONTENT OF FROM 0.02 TO ABOUT 5 PERCENT SILICA AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM, SAID COMPOSITION ADDITIONALLY CONTAINING FROM ABOUT 0.5 TO 10 PERCENT BY WEIGHT OF LEAD AS A PROMOTER METAL.
Claim 6
Dependent Claim
134 words
A CATALYST COMPOSITION ESPECIALLY ADAPTED TO SUBSTANTIALLY OXIDIZE THE UNBURNED HYDROCARBONS AND CARBON MONOXIDE CONSTITUENTS OF THE EXHAUST GAS OF INTERNAL COMBUSTION ENGINES, SAID COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF A TRANSITIONAL ALUMINA, AND MANGANESE OXIDE IN AMOUNT CORRESPONDING TO FROM ABOUT 0.5 TO ABOUT 25 PERCENT BY WEIGHT OF MANGANESE AS SAID OXIDE, SAID TRANSITIONAL ALUMINA COMPRISING FROM 10 TO ABOUT 85 PERCENT CHI, FROM 10 TO 85 PERCENT ,ALPHA ALUMINA MONOHYDRATE AND FROM 5 TO 45 PERCENT AMORPHOUS FORMS OF ALUMINA, SAID TRANSITIONAL ALUMINA FURTHER CHARACTERIZED BY HAVING A SILICA CONTENT OF FROM 0.02 TO ABOUT 5 PERCENT SILICA AND HAVING A SURFACE AREA OF AT LEAST 75 SQUARE METERS PER GRAM, SAID COMPOSITION ADDITIONALLY CONTAINING FROM ABOUT 0.5 TO 10 PERCENT BY WEIGHT OF LEAD AS A PROMOTER METAL.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |