US3020239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of vanadium from a supported molybdenum-containing catalyst
Assignee: Gulf Research and Development Co
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Filing: 1958-12-04
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Granted: 1962-02-06
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Expires: 1978-12-04
Abstract
No abstract record available.
Inventors
- 👤 Richard A Flinn
- 👤 Meredith M Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:36
CPC Classifications
B; B01; B01J; B01J38/00; B01J38/48; B01J38/60; B01J38/62; B01J23/00; B01J23/16; B01J23/24; B01J23/28; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR THE REMOVAL OF VANADIUM FROM A CATALYST COMPOSITION WHICH CONTAINS MOLYBDENUM SUPPORTED ON A CARRIER, SAID REMOVAL BEING ACCOMPLISHED WITHOUT SUBSTANTIAL CONCOMITANT REMOVAL OF MOLYBDENUM FROM SAID CATALYST COMPOSITION, WHICH PROCESS COMPRISES WASHING SAID CATALYST COMPOSITION FOR A PERIOD OF AT LEAST ABOUT ONE-HALF HOUR WITH AN AQUEOUS SOLUTION OF BETWEEN ABOUT 0.1 AND 50 WEIGHT PERCENT GLYCOLIC ACID AT A TEMPERATURE BETWEEN ABOUT 30* AND 150*F.
Claim 2
Dependent Claim
70 words
A PROCESS FOR THE REMOVAL OF VANADIUM FROM A CATALYST COMPOSITION WHICH CONTAINS MOLYBDENUM SUPPORTED ON A CARRIER, SAID REMOVAL BEING ACCOMPLISHED WITHOUT SUBSTANTIAL CONCOMITANT REMOVAL OF MOLYBDENUM FROM SAID CATALYST COMPOSITION, WHICH PROCESS COMPRISES WASHING SAID CATALYST COMPOSITION FOR A PERIOD OF AT LEAST ABOUT ONE-HALF HOUR WITH AN AQUEOUS SOLUTION OF BETWEEN ABOUT 0.1 AND 50 WEIGHT PERCENT GLYCOLIC ACID AT A TEMPERATURE BETWEEN ABOUT 30* AND 150*F.
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) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |