Patent US2985692A successfully refreshed from Google Patents.
US2985692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkyl magnesium compounds
Assignee: Ethyl Corp
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Filing: 1959-01-27
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Granted: 1961-05-23
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Expires: 1979-01-27
Abstract
No abstract record available.
Inventors
- 👤 Harold E Podall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:07
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
THE PROCESS OF MAKING AN ALKYL MAGNESIUM COMPOUND COMPRISING REACTING MAGNESIUM HYDRIDE WITH AN OLEFIN HYDROCARBON IN A LIQUID REACTION MEDIUM INCLUDING A COORDINATING SULFUR COMPOUND SELECTED FROM THE GROUP CONSISTING OF A THIOETHER, A SULFOXIDE, AND A SULFONE.
Claim 2
Dependent Claim
39 words
THE PROCESS OF MAKING AN ALKYL MAGNESIUM COMPOUND COMPRISING REACTING MAGNESIUM HYDRIDE WITH AN OLEFIN HYDROCARBON IN A LIQUID REACTION MEDIUM INCLUDING A COORDINATING SULFUR COMPOUND SELECTED FROM THE GROUP CONSISTING OF A THIOETHER, A SULFOXIDE, AND A SULFONE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |