US2944948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of purifying organometallic complexes and their use in the preparation of organolead compounds
Assignee: Ethyl Corp
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Filing: 1956-02-06
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Granted: 1960-07-12
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Albert P Giraitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:25
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24; C25; C25B; C25B3/00; C25B3/01; C25B3/13
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
IN A PROCESS FOR PRODUCING HYDROCARBON LEAD COMPOUNDS WHICH COMPRISES PASSING AN ELECTRIC CURRENT FROM A LEAD ANODE TO A CATHODE IN AN ELECTROLYTE CONTAINING A COMPLEX OF A HYDROCARBON METAL COMPOUND, WHEREIN THE VALENCES OF THE METAL ARE SATISFIED WITH MONOVALENT HYDROCARBON RADICALS, AND AN IONIZABLE SALT, THE IMPROVEMENT COMPRISING EXTRACTING SAID ELECTROLYTE PRIOR TO ELECTROLYSIS WITH AN EXTRACTING LIQUID SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON METAL COMPOUNDS AND ALIPHATIC HYDROCARBONS HAVING SOLUBILITY COMPOUNDS AND ALIPHATIC OXIDE CONTAMINANTS THEREIN AND BEING ESSENTIALLY IMMISCIBLE WITH SAID ELECTROLYTE.
References Cited (Backward Citations)
US2517692A
Cited
US2473434A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |