US3660479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated aldehydes and acids
Assignee: Gulf Research and Development Co
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Filing: 1969-08-15
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Granted: 1972-05-02
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Expires: 1989-08-15
Abstract
Abstract A METHOD OF OXIDIZING PROPYLENE AND ISOBUTENE TO THE CORRESPONDING UNSATURATED ALDEHYDES AND ACIDS AND FOR OXIDIZING THE UNSATURATED ALDEHYDES OF PROPYLENE AND ISOBUTENE TO THE CORRESPONDING UNSATURATED ACIDS BY THE VAPOR PHASE REACTION WITH MOLECULAR OXYGEN IN THE PRESENCE OF A CATALYST OF COBALT MOLYBDATE PROMOTED WITH A COMPOSITION OF LEAD, TELLURIUM AND OXYGEN. PROPYLENE IS CONVERTED TO ACROLEIN AND ACRYLIC ACID AND ACROLEIN IS CONVERTED TO ACRYLIC ACID.
Inventors
- 👤 John A Ondrey
- 👤 Harold E Swift
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/35; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252
Claims Analysis
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |