Patent US3243387A successfully refreshed from Google Patents.
US3243387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Palladium-silver-iron oxide on alphaalumina catalyst composition for the selective hydrogenation of acetylene
Assignee: Leuna Werke GmbH
•
Filing: 1963-04-25
•
Granted: 1966-03-29
•
Expires: 1983-04-25
Abstract
No abstract record available.
Inventors
- 👤 Blume Hermann
- 👤 Munzing Joachim
- 👤 Pindur Emanuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:10
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8906; D; D06; D06L; D06L4/00; D06L4/10; D06L4/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A CATALYST FOR THE SELECTIVE HYDROGENATION OF ACETYLENE TO ETHYLENE, SAID CATALYST CONSISTING ESSENTIALLY OF AALUMINA AS INERT CARRIER SUPPORTING AS ACTIVE COMPONENTS PALLADIUM, SILVER, AND IRON, SAID PALLADIUM AND SILVER BEING PRESENT IN AMOUNTS UP TO 5% BY WEIGHT OF THE ENTIRE CATALYTIC MASS, AND THE IRON COMPONENT BEING PRESENT AS FERRIC OXIDE IN AN AMOUNT BETWEEN 19 TO 80 TIMES THE COMBINED WEIGHT OF SAID PALLADIUM AND SILVER COMPONENTS.
Claim 2
Dependent Claim
71 words
A CATALYST FOR THE SELECTIVE HYDROGENATION OF ACETYLENE TO ETHYLENE, SAID CATALYST CONSISTING ESSENTIALLY OF AALUMINA AS INERT CARRIER SUPPORTING AS ACTIVE COMPONENTS PALLADIUM, SILVER, AND IRON, SAID PALLADIUM AND SILVER BEING PRESENT IN AMOUNTS UP TO 5% BY WEIGHT OF THE ENTIRE CATALYTIC MASS, AND THE IRON COMPONENT BEING PRESENT AS FERRIC OXIDE IN AN AMOUNT BETWEEN 19 TO 80 TIMES THE COMBINED WEIGHT OF SAID PALLADIUM AND SILVER COMPONENTS.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |