US2955124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of organolead compounds
Assignee: Ethyl Corp
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Filing: 1957-02-27
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Granted: 1960-10-04
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Sidney M Blitzer
- 👤 Tillmon H Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:15
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
IN A PROCESS FOR THE MANUFACTURE OF A HYDROCARBON LEAD COMPOUND WHICH COMPRISES REACTING A LEAD ORGANO ACID SALT WHEREIN LEAD IS ATTACHED TO AT LEAST ONE CARBON CONTAINING RADICAL THROUGH AN INTERMEDIATE ATOM SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR AND AN ACTIVE HYDROCARBON METAL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF GROUP I-A, II, AND III-A METALS HAVING AN ELECTRODE POTENTIAL OF MORE THAN 0.3 VOLT AND WHEREIN THE HYDROCARBON GROUPS OF SAID ACTIVE HYDROCARBON METAL COMPOUND ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, AND ARYL GROUPS HAVING UP TO AND INCLUDING 10 CARBON ATOMS, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF AN ETHER WHICH IS ESSENTIALLY INERT TO THE REACTANTS, LIQUID UNDER THE REACTION CONDITIONS, AND SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL ETHERS.
Claim 2
Dependent Claim
140 words
IN A PROCESS FOR THE MANUFACTURE OF A HYDROCARBON LEAD COMPOUND WHICH COMPRISES REACTING A LEAD ORGANO ACID SALT WHEREIN LEAD IS ATTACHED TO AT LEAST ONE CARBON CONTAINING RADICAL THROUGH AN INTERMEDIATE ATOM SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND SULFUR AND AN ACTIVE HYDROCARBON METAL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF GROUP I-A, II, AND III-A METALS HAVING AN ELECTRODE POTENTIAL OF MORE THAN 0.3 VOLT AND WHEREIN THE HYDROCARBON GROUPS OF SAID ACTIVE HYDROCARBON METAL COMPOUND ARE SELECTED FROM THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, AND ARYL GROUPS HAVING UP TO AND INCLUDING 10 CARBON ATOMS, THE IMPROVEMENT WHICH COMPRISES CONDUCTING SAID REACTION IN THE PRESENCE OF AN ETHER WHICH IS ESSENTIALLY INERT TO THE REACTANTS, LIQUID UNDER THE REACTION CONDITIONS, AND SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL ETHERS.
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) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |