Patent US2721883A successfully refreshed from Google Patents.
US2721883A
Expired / Lapsed
US
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Stabilization of halogenated hydrocarbons
Assignee: Columbia Southern Chemical Corp
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Filing: 1953-02-25
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Granted: 1955-10-25
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Expires: 1973-02-25
Abstract
No abstract record available.
Inventors
- 👤 Henry C Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:53
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
THE METHOD OF STABILIZING HALOGENATED ALIPHATIC HYDROCARBONS CONTAINING UP TO 3 CARBON ATOMS WHICH COMPRISES ADDING THERETO A SMALL STABILIZING QUANTITY OF N-METHYL MORPHOLINE.
Claim 2
Independent Claim
24 words
THE METHOD OF STABILIZING HALOGENATED ALIPHATIC HYDROCARBONS CONTAINING UP TO 3 CARBON ATOMS WHICH COMPRISES ADDING THERETO A SMALL STABILIZING QUANTITY OF N-METHYL MORPHOLINE.
References Cited (Backward Citations)
US2121010A
Cited
US2517893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |