US3107223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vanadium pentoxide catalyst and method of preparation thereof
Assignee: KOPPERS PITTSBURGH Co
•
Filing: 1959-05-06
•
Granted: 1963-10-15
•
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 03:06
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.
References Cited (Backward Citations)
US2815352A
Cited
US2863879A
Cited
US2107611A
Cited
US2328103A
Cited
US2674582A
Cited
US2809939A
Cited
US2929792A
Cited
US2992238A
Cited
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 |