Patent US3024268A successfully refreshed from Google Patents.
US3024268A
Expired / Lapsed
US
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Production of dialkyl succinylsuccinates
Assignee: EIDP Inc
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Filing: 1957-10-28
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Granted: 1962-03-06
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Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 William S Struve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:52
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/74; C07C69/757
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A PROCESS FOR THE PRODUCTION OF AN ALCOHOL COMPLEX OF A DIALKALI METAL DERIVATIVE OF A LOWER DIALKYL CYCLOHEXA-1,4-DIENE-2,5-DIOL-1,4-DICARBOXYLATE WHICH COMPRISES REACTING A LOWER DIALKYL SUCCINATE WITH AN ALKALI METAL ALKOXIDE IN THE PRESENCE OF AN ORGANIC DILUENT WHICH IS LIQUID UNDER REACTION CONDITIONS AND HAS A BOILING POINT ABOVE 240*C., SAID DILUENT BEING SELECTED FROM THE GROUP CONSISTING OF DIPHENYL OXIDE, PARAFFINIC, AROMATIC, AND CYCLIC HYDROCARBONS AND MIXTURE THEREOF.
Claim 2
Dependent Claim
70 words
A PROCESS FOR THE PRODUCTION OF AN ALCOHOL COMPLEX OF A DIALKALI METAL DERIVATIVE OF A LOWER DIALKYL CYCLOHEXA-1,4-DIENE-2,5-DIOL-1,4-DICARBOXYLATE WHICH COMPRISES REACTING A LOWER DIALKYL SUCCINATE WITH AN ALKALI METAL ALKOXIDE IN THE PRESENCE OF AN ORGANIC DILUENT WHICH IS LIQUID UNDER REACTION CONDITIONS AND HAS A BOILING POINT ABOVE 240*C., SAID DILUENT BEING SELECTED FROM THE GROUP CONSISTING OF DIPHENYL OXIDE, PARAFFINIC, AROMATIC, AND CYCLIC HYDROCARBONS AND MIXTURE THEREOF.
References Cited (Backward Citations)
US2782220A
Cited
US2821541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |