US2829116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of oxidation catalytic units
Assignee: National Research Council Canada
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Filing: 1953-02-02
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Granted: 1958-04-01
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Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 Wendal A Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:52
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/937; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
THE PROCESS OF PREPARING A CATALYTIC UNIT FOR THE OXIDATION OF HYDROCARBONS, SUCH AS ETHYLENE, WHICH COMPRISES COATING A METAL SURFACE WITH A MOLTEN MIXTURE OF SILVER AND AT LEAST ONE ALKALINE EARTH METAL TO FORM A SILVER-ALKALINE EARTH METAL ALLOY COATING ON THE METAL SURFACE, AND REMOVING FROM AT LEAST 5% TO ALL BUT A TRACE OF THE ALKALINE EARTH METAL FROM THE ALLOY COATING.
Claim 2
Dependent Claim
66 words
THE PROCESS OF PREPARING A CATALYTIC UNIT FOR THE OXIDATION OF HYDROCARBONS, SUCH AS ETHYLENE, WHICH COMPRISES COATING A METAL SURFACE WITH A MOLTEN MIXTURE OF SILVER AND AT LEAST ONE ALKALINE EARTH METAL TO FORM A SILVER-ALKALINE EARTH METAL ALLOY COATING ON THE METAL SURFACE, AND REMOVING FROM AT LEAST 5% TO ALL BUT A TRACE OF THE ALKALINE EARTH METAL FROM THE ALLOY COATING.
References Cited (Backward Citations)
BE509882A
Cited
US2562858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |