US3226340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst compositions comprising alumina with an inner lamina of metal oxide and an outermost lamina of copper oxide
Assignee: Ethyl Corp
•
Filing: 1961-03-30
•
Granted: 1965-12-28
•
Expires: 1981-03-30
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
2026-10-27 21:17
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/02; B01J37/024; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/92; B01D53/94; B01D53/944; B01J23/00; B01J23/70; B01J23/72; B01J23/76; B01J23/83; B01J35/00; B01J35/50; B01J35/51; B01J37/03; B01J37/08; B01J37/082; B01J37/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A LAMINATED CATALYST COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF TRANSITIONAL ALUMINA HAVING AN INITIAL LAMINA DEPOSITED THEREON OF FROM ABOUT 0.5 TO FROM THE GROUP CONSISTING OF THE FIRST TRANSITION SERIES OF THE PERIODIC TABLE AND THE LANTHANIDE SERIES OF ELEMENTS, AND AS THE OUTERMOST LAMINA FROM ABOUT 0.5 TO 25 PERCENT BY WEIGHT OF COPPER IN AN OXIDE FORM.
Claim 2
Dependent Claim
62 words
A LAMINATED CATALYST COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PORTION OF TRANSITIONAL ALUMINA HAVING AN INITIAL LAMINA DEPOSITED THEREON OF FROM ABOUT 0.5 TO FROM THE GROUP CONSISTING OF THE FIRST TRANSITION SERIES OF THE PERIODIC TABLE AND THE LANTHANIDE SERIES OF ELEMENTS, AND AS THE OUTERMOST LAMINA FROM ABOUT 0.5 TO 25 PERCENT BY WEIGHT OF COPPER IN AN OXIDE FORM.
References Cited (Backward Citations)
US2725400A
Cited
US1589644A
Cited
US1871117A
Cited
US2071119A
Cited
US2402854A
Cited
US2688603A
Cited
US2742437A
Cited
US2794784A
Cited
US2867497A
Cited
US3009871A
Cited
US2945057A
Cited
US3112277A
Cited
GB950235A
Cited
US3133029A
Cited
US3140148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |