US3819685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of esters from unsaturated aldehydes and alcohols
Assignee: Standard Oil Co
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Filing: 1971-12-06
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Granted: 1974-06-25
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Expires: 1991-12-06
Abstract
Abstract ACRYLIC ESTERS AND METHACRYLIC ESTERS ARE FORMED DIRECTLY FROM THE ALDEHYDE BY REACTING ACROLIEN OR METHACROLEIN WITH MOLECULAR OXYGEN AND AN ALCOHOL IN THE PRESENCE OF AN OXIDATION CATALYST UNDER THE CONDITIONS NORMALLY ASSOCIATED WITH THE REACTION OF THE ALDEHYDE TO THE ACID.
Inventors
- 👤 Robert K Grasselli
- 👤 Dev D Suresh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:57
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/44; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/30; C07C67/39; C07C69/00; C07C69/52; C07C69/533; C07C69/54
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |