US2838556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo-aluminum compounds
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-10-27
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Granted: 1958-06-10
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Expires: 1975-10-27
Abstract
No abstract record available.
Inventors
- 👤 Delmer L Cottle
- 👤 Stanley B Mirviss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:42
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/064
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
IN A METHOD WHEREIN AN ORGANO-ALUMINUM HALIDE CONTAINING A HYDROCARBON RADICAL OF 1 TO 12 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND PHENYL GROUPS IS REDUCED WITH A REDUCING METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REDUCTION WITH A LIQUID AMALGAM OF SAID REDUCING METAL.
Claim 2
Dependent Claim
61 words
IN A METHOD WHEREIN AN ORGANO-ALUMINUM HALIDE CONTAINING A HYDROCARBON RADICAL OF 1 TO 12 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND PHENYL GROUPS IS REDUCED WITH A REDUCING METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND ALKALINE EARTH METALS, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REDUCTION WITH A LIQUID AMALGAM OF SAID REDUCING METAL.
Claim 3
Dependent Claim
39 words
IN A METHOD FOR REDUCING A C1 TO 12 ALKYL ALUMINUM CHLORIDE BY REACTION WITH SODIUM METAL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REACTION WITH A LIQUID AMALGAM CONTAINING 0.1 TO 1.5% BY WEIGHT OF SAID SODIUM METAL.
Claim 4
Dependent Claim
39 words
IN A METHOD FOR REDUCING A C1 TO 12 ALKYL ALUMINUM CHLORIDE BY REACTION WITH SODIUM METAL, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT SAID REACTION WITH A LIQUID AMALGAM CONTAINING 0.1 TO 1.5% BY WEIGHT OF SAID SODIUM METAL.
References Cited (Backward Citations)
US2691668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |