Patent US2979538A successfully refreshed from Google Patents.
US2979538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propynyl esters of dicarboxylic acids for stabilizing halogenated hydrocarbon
Assignee: Diamond Shamrock Corp
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Filing: 1958-07-21
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Granted: 1961-04-11
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Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 John H Wotiz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:39
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A STABILIZED SIDE CHAIN-HALOGENATED AROMATIC HYDROCARBON COMPRISING ESSENTIALLY A SIDE CHAIN-HALOGENEATED AROMATIC HYDROCARBON CONTAMINATED WITH METAL IONS AND A STABILIZING AMOUNT OF COMPOUND HAVING THE STRUCTURE:
Claim 2
Dependent Claim
26 words
A STABILIZED SIDE CHAIN-HALOGENATED AROMATIC HYDROCARBON COMPRISING ESSENTIALLY A SIDE CHAIN-HALOGENEATED AROMATIC HYDROCARBON CONTAMINATED WITH METAL IONS AND A STABILIZING AMOUNT OF COMPOUND HAVING THE STRUCTURE:
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US2801160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |