US2866813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aldehyde diacylates and process for producing the same
Assignee: Union Carbide Corp
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Filing: 1956-03-29
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Granted: 1958-12-30
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Lucian W Mcteer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:08
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR PRODUCING ALDEHYDE DISACYLATES WHICH COMPRISES BRINGING INTO REACTIVE ADMIXTURE AN ALIPHATIC ALDEHYDE CONTAINING FROM 1 TO 8 CARBON ATOMS, INCLUSIVE, WITH A LOWER ALIPHATIC CARBOXLIC ACID ANHYDRIDE AT A TEMPERATURE OF FROM ABOUT -20*C. TO ABOUT 100* C. IN THE PRESENCE OF A CATALYST COMPRISED OF BORIC ACID AND OXALIC ACID. 5. 1,1-DIACETOXY-2,4-HEXADIENE.
Claim 2
Dependent Claim
56 words
A PROCESS FOR PRODUCING ALDEHYDE DISACYLATES WHICH COMPRISES BRINGING INTO REACTIVE ADMIXTURE AN ALIPHATIC ALDEHYDE CONTAINING FROM 1 TO 8 CARBON ATOMS, INCLUSIVE, WITH A LOWER ALIPHATIC CARBOXLIC ACID ANHYDRIDE AT A TEMPERATURE OF FROM ABOUT -20*C. TO ABOUT 100* C. IN THE PRESENCE OF A CATALYST COMPRISED OF BORIC ACID AND OXALIC ACID. 5. 1,1-DIACETOXY-2,4-HEXADIENE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |