US2999889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Divinylmagnesium and method of making
Assignee: Union Carbide Corp
•
Filing: 1959-08-10
•
Granted: 1961-09-12
•
Expires: 1979-08-10
Abstract
No abstract record available.
Inventors
- 👤 Donald J Foster
- 👤 Tobler Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:36
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/30; C06; C06B; C06B43/00; C07; C07F; C07F3/00; C07F3/02; C07F3/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
PROCESS FOR MAKING DIVINYLMAGNESIUM WHICH COMPRISES REACTING MAGNESIUM WITH DIVINYLMERCURY, THE REACTION BEING CARRIED OUT IN A SOLVENT REACTION MEDIUM, SAID SOLVENT BEING AN ALIPHATIC ETHER CONTAINING FROM TWO TO TWELVE CARBON ATOMS.
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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |