Patent US3646115A successfully refreshed from Google Patents.
US3646115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of unsaturated esters using complexed catalysts
Assignee: Mobil Oil AS
•
Filing: 1967-09-13
•
Granted: 1972-02-29
•
Expires: 1987-09-13
Abstract
Abstract UNSATURATED ESTERS ARE PREPARED BY REACTING AN OLEFIN WITH A MONOCARBOXYLIC ACID AND OXYGEN IN THE PRESENCE OF A COMPLEXED CATALYST. THE CATALYST COMPRISES A HALIDE OF RH OR IR WHEREIN THE METAL HAS A VALENCE LOWER THAN MAXIMUM, COMPLEXED WITH CARBON MONOXIDE OR TRIHYDROCARBYL PHOSPHINES, ARSINES, OR STIBINES OR MIXTURES THEREOF. THE UNSATURATED ESTERS HAVE MANY KNOWN USES, SUCH AS IN PREPARING HOMOPOLYMERS AND COPOLYMERS WITH OTHER VINYL COMPOUNDS IN THE COATING FIELD.
Inventors
- 👤 Leon Starr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:13
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |