Patent US2641582A successfully refreshed from Google Patents.
US2641582A
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Regeneration of a platinumcontaining catalyst
Assignee: Universal Oil Products Co
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Filing: 1950-10-03
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Granted: 1953-06-09
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Expires: 1970-10-03
Abstract
No abstract record available.
Inventors
- 👤 Haensel Vladimir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:26
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/90; B01J23/96; Y; Y10; Y10S; Y10S252/00; Y10S252/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF REACTIVATING A CARBONIZED CATALYST COMPRISING ALUMINA, FROM ABOUT 0.01% TO ABOUT 1% BY WEIGHT OF PLATINUM AND FROMN ABOUT 0.1% TO ABOUT 8% BY WEIGHT OF HALOGEN, WHICH COMPRISES TREATING SAID CATALYST WITH AIR AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 700* F. FOR A PERIOD OF FROM ABOUT 6 TO ABOUT 30 HOURS AND THEN FURTHER TREATING THE CATALYST WITH AIR AT A TEMPERATURE OF FROM 800* TO 1000* F. FOR A PERIOD FROM ABOUT 1 TO ABOUT 6 HOURS.
Claim 2
Independent Claim
86 words
THE METHOD OF REACTIVATING A CARBONIZED CATALYST COMPRISING ALUMINA, FROM ABOUT 0.01% TO ABOUT 1% BY WEIGHT OF PLATINUM AND FROMN ABOUT 0.1% TO ABOUT 8% BY WEIGHT OF HALOGEN, WHICH COMPRISES TREATING SAID CATALYST WITH AIR AT A TEMPERATURE OF FROM ABOUT 500* TO ABOUT 700* F. FOR A PERIOD OF FROM ABOUT 6 TO ABOUT 30 HOURS AND THEN FURTHER TREATING THE CATALYST WITH AIR AT A TEMPERATURE OF FROM 800* TO 1000* F. FOR A PERIOD FROM ABOUT 1 TO ABOUT 6 HOURS.
References Cited (Backward Citations)
US2388536A
Cited
US2368507A
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US2382472A
Cited
US2406172A
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US2470916A
Cited
US2461838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |