US2605239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coprecipitated silver-beryllium
Assignee: —
•
Filing: —
•
Granted: 1952-07-29
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Expires: 1969-07-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:23
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/002; B01J23/38; B01J23/54; B01J23/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR PREPARING A SILVER-BERYLLIUM OXIDE CATALYST ADAPTED TO CATALYZE THE OXIDATION OF ETHYLENE TO ETHYLENE OXIDE WHICH COMPRISES COPRECIPITATING A REDUCIBLE OXYGEN-CONTAINING COMPOUND OF SILVER AND A CORRESPONDING COMPOUND OF BERYLLIUM IN A SILVER: BERYLLIUM WEIGHT RATIO OF FROM 10:1 TO 5000:1 FROM A SOLUTION OF A SILVER COMPOUND AND A BERYLLIUM COMPOUND AND REDUCING THE COPRECIPITATE TO A MIXTURE OF METALLIC SILVER AND BERYLLIUM OXIDE.
Claim 2
Dependent Claim
68 words
A PROCESS FOR PREPARING A SILVER-BERYLLIUM OXIDE CATALYST ADAPTED TO CATALYZE THE OXIDATION OF ETHYLENE TO ETHYLENE OXIDE WHICH COMPRISES COPRECIPITATING A REDUCIBLE OXYGEN-CONTAINING COMPOUND OF SILVER AND A CORRESPONDING COMPOUND OF BERYLLIUM IN A SILVER: BERYLLIUM WEIGHT RATIO OF FROM 10:1 TO 5000:1 FROM A SOLUTION OF A SILVER COMPOUND AND A BERYLLIUM COMPOUND AND REDUCING THE COPRECIPITATE TO A MIXTURE OF METALLIC SILVER AND BERYLLIUM OXIDE.
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) | 1955-07-29 | 1956-01-28 | 1956-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-29 | 1960-01-28 | 1960-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-29 | 1964-01-28 | 1964-07-29 | $7700.00 | Window Closed / Lapsed |