US3034991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the catalytic activity of impregnated activated carbon catalysts
Assignee: Wacker Chemie AG
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Filing: 1959-08-18
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Granted: 1962-05-15
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Expires: 1979-08-18
Abstract
No abstract record available.
Inventors
- 👤 Fruhwirth Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:48
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; B01J27/138; B01J31/00; B01J31/02; B01J31/04; B01J31/16; B01J31/1616; B01J21/00; B01J21/18; B01J37/00; B01J37/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS FOR INCREASING THE CATALYST ACTIVITY OF A CATALYST MADE BY IMPREGNATING ACTIVATED CARBON WITH A 50% AQUEOUS SOLUTION OF ZINC ACETANE AT A TEMPERATURE OF ABOUT 90* C., WHICH COMPRISES SUBMERGING SAID CATALYST-IMPREGNATED CARBON IN HOT WATER FOR ABOUT 5 MINUTES.
Claim 2
Dependent Claim
43 words
A PROCESS FOR INCREASING THE CATALYST ACTIVITY OF A CATALYST MADE BY IMPREGNATING ACTIVATED CARBON WITH A 50% AQUEOUS SOLUTION OF ZINC ACETANE AT A TEMPERATURE OF ABOUT 90* C., WHICH COMPRISES SUBMERGING SAID CATALYST-IMPREGNATED CARBON IN HOT WATER FOR ABOUT 5 MINUTES.
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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |