US3239568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of alkali metal compounds
Assignee: Ethyl Corp
•
Filing: 1960-08-09
•
Granted: 1966-03-08
•
Expires: 1980-08-09
Abstract
No abstract record available.
Inventors
- 👤 Pree David O De
- 👤 James D Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:58
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C31/00; C07C31/28; C07C31/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A PROCESS FOR THE PREPARATION OF AN A-ALKYLATED ALKALI METAL ALKOXIDE WHICH COMPRISES CONTACTING UNDER INERT, SUBSTANTIALLY ANHYDROUS AND OXYGEN-FREE CONDITIONS AN ALKALI METAL ALKOXIDE HAVING A HYDROGEN ATOM ON THE A-CARBON ATOM WITH A METALATING AGENT SELECTED FROM THE GROUP CONSISTING OF (1) ALKALI METALS, (2) ALKALI METAL HALIDES, AND (3) ALKALI METAL AMIDES AT A TEMPERATURE OF FROM ABOUT 50*C. UP TO THE DECOMPOSITION TEMPERATURE OF SAID ALKOXIDE, SAID METALATING AGENT AND SAID ALKOXIDE HAVING A PARTICLE SIZE BELOW ABOUT 100 MICRONS, AND THEREAFTER CONTACTING THE ALKALI A-METALLOMETALLIC ALKOXIDE THEREBY PRODUCED WITH AN ALKYLATING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROCARBON HALIDES AND HYDROCARBON SULFATES AT A TEMPERATUE RANGING FROM ABOUT -30*C. UP TO THE DECOMPOSITION TEMPERATURE OF THE ALKALI A-METALLO-METALLIC ALKOXIDE.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |