Patent US2844551A successfully refreshed from Google Patents.
US2844551A
Expired / Lapsed
US
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Aluminum compounds and the process of preparing them
Assignee: Hoechst AG
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Filing: 1953-04-07
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Granted: 1958-07-22
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Expires: 1973-04-07
Abstract
No abstract record available.
Inventors
- 👤 Orthner Ludwig
- 👤 Reuter Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:36
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
THE PROCESS FOR PREPARING HIGH MOLECULAR ACID ALUMINUM ALCOHOLATES CONTAINING LESS THAN ONE ACID RADICAL PER ALUMINUM ATOM WHICH COMPRISES REACTING AT A TEMPERATURE RANGING FROM ABOUT 40*C. TO 140*C. AN ALUMINUM ALCOHOLATE CONTAINING UP TO FOUR CARBON ATOMS IN THE ALCOHOL RADICALS WITH LESS THAN THE EQUIMOLAR AMOUNT OF A MONOBASIC ORGANIC ACID CAPABLE OF FORMING SALTS WITH ALUMINUM, WHEREBY A PRIMARY MONOSALT OF THE ALUMINIM ALCOHOLATE IS FIRST FORMED AND THE MONOSALT REACTS FURTHER WITH THE EXCESS ALCOHOLATE.
References Cited (Backward Citations)
US2582833A
Cited
BE503437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |