Patent US2621200A successfully refreshed from Google Patents.
US2621200A
Expired / Lapsed
US
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Liquid ammonia process for forming hydrocarbonlead compounds
Assignee: Ethyl Corp
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Filing: 1951-06-16
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Granted: 1952-12-09
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Expires: 1971-06-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred J Kolka
- 👤 Ivar T Krohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:42
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE PROCESS OF FORMING HYDROCARBONLEAD COMPOUNDS COMPRISIN DISSOLVING, IN A REACTION MEDIUM COMPRISING ESSENTIALLY LIQUID AMMONIA, LEAD AND A REDUCING METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI AND ALKALINE EARTH METALS AND REACTING THE RESULTING SOLUTION WITH AN ALKYLATING OR ARYLATING AGENT HAVING THE PROPER HYDROCARBON GROUPS IN QUESTION AND HAVING A NEGATIVE RADICAL WHICH REACTS WITH THE REDUCING METAL.
Claim 2
Dependent Claim
61 words
THE PROCESS OF FORMING HYDROCARBONLEAD COMPOUNDS COMPRISIN DISSOLVING, IN A REACTION MEDIUM COMPRISING ESSENTIALLY LIQUID AMMONIA, LEAD AND A REDUCING METAL SELECTED FROM THE CLASS CONSISTING OF ALKALI AND ALKALINE EARTH METALS AND REACTING THE RESULTING SOLUTION WITH AN ALKYLATING OR ARYLATING AGENT HAVING THE PROPER HYDROCARBON GROUPS IN QUESTION AND HAVING A NEGATIVE RADICAL WHICH REACTS WITH THE REDUCING METAL.
References Cited (Backward Citations)
US1622228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |