Patent US2797250A successfully refreshed from Google Patents.
US2797250A
Expired / Lapsed
US
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Stabilization of chlorinated hydrocarbons
Assignee: EIDP Inc
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Filing: 1954-05-13
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Granted: 1957-06-25
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Expires: 1974-05-13
Abstract
No abstract record available.
Inventors
- 👤 Harry B Copelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:26
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
A COMPOSITION OF MATTER COMPRISING A CHLORINATED HYDROCARBON DEGREASING SOLVENT CONTAINING ABOUT 0.001 RO 0.2% BY WEIGHT OF A BASIC AMINE WHICH (1) IN SOLUBLE IN SAID SOLVENT, (I) VOLATILIZED WITH THE SOLVEN WHEN THE LATTER BOILS AND (3) REACTS WITH HCI TO FORM A SALT THEREOF AND FURTHER CONTAINS IN SOLUTION IN SAID SOLVENT AN EPOXIDE CAPABLE OF REACTING WITH THE HYDROCHLORIDE OF SAID AMINE TO FORM A CHLOROHYDRIN.
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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |