Patent US2979497A successfully refreshed from Google Patents.
US2979497A
Expired / Lapsed
US
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Cyclic aluminum oxide acylates, alkoxides, and phenoxides
Assignee: J W Ayers & Co
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Filing: 1957-02-12
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Granted: 1961-04-11
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Expires: 1977-02-12
Abstract
No abstract record available.
Inventors
- 👤 Rinse Jacobus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:59
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/10; C07; C07F; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR THE PRODUCTION OF CYCLIC ALUMINUM OXIDE POLYMERS WHICH COMPRISES REACTING AN ALUMINUM ALKOXIDE THE ALKYL GROUP WHICH CONTAINS UP TO 10 CARBON ATOMS WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED MONOCARBOXYLIC ACIDS OF 1-22 CARBON ATOMS AND UNSUBSTITUTED DICARBOXYLIC ACID ANHYDRIDES AND WITH WATER, IN THE MOLAR RATIO OF APPROXMATELY 3:2-3:3 RESPECTIVELY, BY HEATING TO A FINAL TEMPERATURE ABOVE 80*C. AT WHICH AND UNTIL 8-9 MOLS OF ALCOHOL, RESPECTIVELY, PER 3 MOLS OF ALUMINUM COMPOUND USED ARE LIBERATED.
Claim 2
Dependent Claim
84 words
A PROCESS FOR THE PRODUCTION OF CYCLIC ALUMINUM OXIDE POLYMERS WHICH COMPRISES REACTING AN ALUMINUM ALKOXIDE THE ALKYL GROUP WHICH CONTAINS UP TO 10 CARBON ATOMS WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED MONOCARBOXYLIC ACIDS OF 1-22 CARBON ATOMS AND UNSUBSTITUTED DICARBOXYLIC ACID ANHYDRIDES AND WITH WATER, IN THE MOLAR RATIO OF APPROXMATELY 3:2-3:3 RESPECTIVELY, BY HEATING TO A FINAL TEMPERATURE ABOVE 80*C. AT WHICH AND UNTIL 8-9 MOLS OF ALCOHOL, RESPECTIVELY, PER 3 MOLS OF ALUMINUM COMPOUND USED ARE LIBERATED.
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |