Patent US3595910A successfully refreshed from Google Patents.
US3595910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated aliphatic carboxylic acids
Assignee: BP Chemicals Ltd
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Filing: 1967-04-21
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Granted: 1971-07-27
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Expires: 1987-04-21
Abstract
Abstract VAPOUR PHASE CATALYTIC OXIDATION OF (METH) ACROLEIN USING AN OXIDE COMPOSITION CONTAINING ANTIMONY, MOLYBDENUM AND COBALT AS CATALYST.
Inventors
- 👤 William John Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:28
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/887; B01J23/8876; B01J23/882; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; B01J2523/00
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |