Patent US2802023A successfully refreshed from Google Patents.
US2802023A
Expired / Lapsed
US
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Process of preparing glycol diesters from epoxides
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-05-07
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Granted: 1957-08-06
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Expires: 1974-05-07
Abstract
No abstract record available.
Inventors
- 👤 Merrell R Fenske
- 👤 Jennings H Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:18
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/08; C07C; C07C67/00; C07C67/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A PROCESS FOR PREPARING DIESTERS OF GLYCOLS FROM AN EPOXIDE HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
A PROCESS FOR PREPARING DIESTERS OF GLYCOLS FROM AN EPOXIDE HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |