US2955089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of deactivated catalyst
Assignee: Universal Oil Products Co
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Filing: 1957-08-02
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Granted: 1960-10-04
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Expires: 1977-08-02
Abstract
No abstract record available.
Inventors
- 👤 William K T Gleim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:06
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/96; Y; Y10; Y10S; Y10S502/00; Y10S502/514; Y10S502/515; Y10S502/516; Y10S502/521
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR REACTIVATING A DEACTIVATED ALUMINAPLATINUM CATALYTIC COMPOSITE CONTAINING ARSENIC WHICH COMPRISES CONTACTING SAID COMPOSITE FOR A PERIOD OF FROM ABOUT ONE HOUR TO ABOUT 24 HOURS AT A TEMPERATURE OF FROM ABOUT 10*C. TO ABOUT 100*C. WITH AN AQUEOUS SOLUTION OF FROM ABOUT 1.0% TO ABOUT 10% BY WEIGHT OF AN ALKALI METAL PERMANGANATE, FROM ABOUT 0.01% TO ABOUT 1% BY WEIGHT OF IODINE, AND FROM ABOUT 1% TO ABOUT 10% BY WEIGHT SULFURIC ACID WITHOUT SUBSTANTIALLY REMOVING THE ARSENIC FROM SAID COMPOSITE.
Claim 2
Dependent Claim
85 words
A PROCESS FOR REACTIVATING A DEACTIVATED ALUMINAPLATINUM CATALYTIC COMPOSITE CONTAINING ARSENIC WHICH COMPRISES CONTACTING SAID COMPOSITE FOR A PERIOD OF FROM ABOUT ONE HOUR TO ABOUT 24 HOURS AT A TEMPERATURE OF FROM ABOUT 10*C. TO ABOUT 100*C. WITH AN AQUEOUS SOLUTION OF FROM ABOUT 1.0% TO ABOUT 10% BY WEIGHT OF AN ALKALI METAL PERMANGANATE, FROM ABOUT 0.01% TO ABOUT 1% BY WEIGHT OF IODINE, AND FROM ABOUT 1% TO ABOUT 10% BY WEIGHT SULFURIC ACID WITHOUT SUBSTANTIALLY REMOVING THE ARSENIC FROM SAID COMPOSITE.
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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |