Patent US3107223A successfully refreshed from Google Patents.
US3107223A
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Vanadium pentoxide catalyst and method of preparation thereof
Assignee: KOPPERS PITTSBURGH Co
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Filing: 1959-05-06
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Granted: 1963-10-15
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Expires: 1979-05-06
Abstract
No abstract record available.
Inventors
- 👤 Leslie W Royer
- 👤 Robert H Wainwright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:35
CPC Classifications
B; B01; B01J; B01J37/00; B01J37/0009; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J37/0018; C; C07; C07C; C07C51/00; C07C51/16; C07C51/31; C07C51/313
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
52 words
METHOD OF MAKING OXIDATION CATALYST COMPRISING UNIFORMLY DEPOSITING A VANADIUM COMPOUND CAPABLE OF BEING READILY CONVERTED TO VANADIUM PENTOXIDE ON POWDERED SILICA GEL, UNIFORMLY ADMIXING THEREWITH ABOUT 5-25 PERCENT BY WEIGHT POLYVINYL ALCOHOL, COMPRESSING THE ADMIXTURE INTO SHAPED PARTICLES, AND HEATING SAID PARTICLES AT AN ELEVATED TEMPERATURE TO REMOVE SAID POLYVINYL ALCOHOL.
Claim 2
Dependent Claim
52 words
METHOD OF MAKING OXIDATION CATALYST COMPRISING UNIFORMLY DEPOSITING A VANADIUM COMPOUND CAPABLE OF BEING READILY CONVERTED TO VANADIUM PENTOXIDE ON POWDERED SILICA GEL, UNIFORMLY ADMIXING THEREWITH ABOUT 5-25 PERCENT BY WEIGHT POLYVINYL ALCOHOL, COMPRESSING THE ADMIXTURE INTO SHAPED PARTICLES, AND HEATING SAID PARTICLES AT AN ELEVATED TEMPERATURE TO REMOVE SAID POLYVINYL ALCOHOL.
Claim 3
Dependent Claim
59 words
AN OXIDATION CATALYST INTERMEDIATE COMPRISING SILICA GEL UNIFORMLY IMPREGNATED WITH A VANADIUM COMPOUND CAPABLE OF BEING RADILY CONVERTED TO VANADIUM PENTOXIDE IN AN AMOUNT EQUIVALENT TO ABOUT 5-25 PERCENT BY WEIGHT OF V2O5 BASES ON THE WEIGHT OF SAID SILICA GEL AND CONTAINING ABOUT 5-25 PERCENT BY WEIGHT OF POLYVINYL ALCOHOL, BASED UP THE WEIGHT OF THE TOTAL COMPOSITION.
Claim 4
Dependent Claim
59 words
AN OXIDATION CATALYST INTERMEDIATE COMPRISING SILICA GEL UNIFORMLY IMPREGNATED WITH A VANADIUM COMPOUND CAPABLE OF BEING RADILY CONVERTED TO VANADIUM PENTOXIDE IN AN AMOUNT EQUIVALENT TO ABOUT 5-25 PERCENT BY WEIGHT OF V2O5 BASES ON THE WEIGHT OF SAID SILICA GEL AND CONTAINING ABOUT 5-25 PERCENT BY WEIGHT OF POLYVINYL ALCOHOL, BASED UP THE WEIGHT OF THE TOTAL COMPOSITION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |