US3868425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized vinylidene bromide
Assignee: Ethyl Corp
•
Filing: 1973-05-23
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Granted: 1975-02-25
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Expires: 1993-05-23
Abstract
Abstract Polybrominated hydrocarbons are stabilized by unsaturated ketones, for example, methyl vinyl ketone.
Inventors
- 👤 Joseph P Kleiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
VINYLIDENE BROMIDE STABILIZED WITH A STABILIZING AMOUNT OF LESS THAN 20 WEIGHT % OF A KETONE HAVING UP TO ABOUT 12 CARBON ATOMS AND THE FORMULA
Claim 2
Dependent Claim
26 words
VINYLIDENE BROMIDE STABILIZED WITH A STABILIZING AMOUNT OF LESS THAN 20 WEIGHT % OF A KETONE HAVING UP TO ABOUT 12 CARBON ATOMS AND THE FORMULA
Claim 3
Dependent Claim
13 words
A stabilized composition of claim 1 wherein said ketone is methyl vinyl ketone.
References Cited (Backward Citations)
US2616881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |