US2881213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the conversion of acrolein and methacrolein to the corresponding unsaturated acids
Assignee: Standard Oil Co
•
Filing: 1957-12-17
•
Granted: 1959-04-07
•
Expires: 1977-12-17
Abstract
No abstract record available.
Inventors
- 👤 Jr James D Idol
- 👤 James L Callahan
- 👤 Robert W Foreman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR THE MANUFACTURE OF AN A,B-UNSATURATED MONO-CARBOXYLIC ACID WHICH COMPRISES THE STEP OF REACTING AN A,B-UNSATURATED ALDEHYDE SELECTED FROM THE GROUPP CONSISTING OF ACROLEIN AND METHACROLEIN WITH OXYGEN IN THE VAPOR PHASE AT A TEMPERATURE IN THE RANGE OF ABOUT 400-850*F. AND IN THE PRESENCE OF A CATALYST COMPRISING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF THE OXIDES OF MOLYBDENUM AND CHROMIUM.
Claim 2
Dependent Claim
66 words
A PROCESS FOR THE MANUFACTURE OF AN A,B-UNSATURATED MONO-CARBOXYLIC ACID WHICH COMPRISES THE STEP OF REACTING AN A,B-UNSATURATED ALDEHYDE SELECTED FROM THE GROUPP CONSISTING OF ACROLEIN AND METHACROLEIN WITH OXYGEN IN THE VAPOR PHASE AT A TEMPERATURE IN THE RANGE OF ABOUT 400-850*F. AND IN THE PRESENCE OF A CATALYST COMPRISING AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF THE OXIDES OF MOLYBDENUM AND CHROMIUM.
References Cited (Backward Citations)
US2462938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |