US3830755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supported catalysts containing vanadium pentoxide and zirconium dioxide
Assignee: BASF SE
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Filing: 1972-11-29
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Granted: 1974-08-20
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Expires: 1992-11-29
Abstract
Abstract SUPPORTED CATALYSTS FOR OXIDATION REACTIONS CONSISTING OF AN INERT CARRIER AND AN ACTIVE COMPOSITION APPLIED THERETO IN A THIN LAYER WHICH CONTAINS FROM 1 TO 30% BY WEIGHT OF VANADIUM PENTOXIDE, FROM 99 TO 40% BY WEIGHT OF ZIRCONIUM DIOXIDE AND FROM 0 TO 55% BY WEIGHT OF TITANIUM DIOXIDE.
Inventors
- 👤 P Reuter
- 👤 W Friedrichsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:02
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/255; C07C51/265; B; B01; B01J; B01J23/00; B01J23/16; B01J23/20; B01J23/22; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/195; B01J27/198; C07C51/31; C07C51/313
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |