Patent US3770813A successfully refreshed from Google Patents.
US3770813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing glycol esters
Assignee: Halcon Research and Development Corp
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Filing: 1971-10-26
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Granted: 1973-11-06
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Expires: 1991-10-26
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR PREPARING GLYCOL TYPE ESTERS BY REACTING AN OLEFIN WITH IODINE, OR AN IODIDE AND OXYGEN, IN THE PRESENCE OF A CARBOXYLATE ANION AND A METAL CATION.
Inventors
- 👤 J Kollar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:38
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C2601/00; C07C2601/06; C07C2601/08; C07C2601/12; C07C2601/14; C07C2601/16
Claims Analysis
Total Claims: 0
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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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |