US2904600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of chlorinated hydrocarbons
Assignee: EIDP Inc
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Filing: 1956-04-04
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Granted: 1959-09-15
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Expires: 1976-04-04
Abstract
No abstract record available.
Inventors
- 👤 Harry B Copelin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:48
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
96 words
THE METHOD OF INHIBITING THE ACCUMULATION OF ACIDIC PRODUCTS IN A LIQUID DEGREASING CHLORINATED HYDROCARBON BY SUPPLYING THERETO A SYNERGISTICALLY COOPERATIVE STABILIZING COMBINATION COMPRISING SMALL BUT EFFECTIVE STABILIZING AMOUNTS OF AN EPOXIDE CONTAINING BETWEEN TWO AND TEN CARBON ATOMS, SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED ALIPHATIC HYDROCARBON EPOXIDE AND ALIPHATIC HYDROCARBON EPOXIDES CONTAINING SUBSTITUENT HALOGEN ATOMS, AND AN AMIDE OF A ONE TO FIVE CARBON ATOM UNSUBSTITUED ALIPHATIC FATTY ACID CONTAINING N-SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL AND POLYMETHYLENE RADICALS, SAID N-SUBSTITUENTS CONTAINING A TOTAL OF NOT MORE THAN 6 CARBON ATOMS.
Claim 2
Independent Claim
96 words
THE METHOD OF INHIBITING THE ACCUMULATION OF ACIDIC PRODUCTS IN A LIQUID DEGREASING CHLORINATED HYDROCARBON BY SUPPLYING THERETO A SYNERGISTICALLY COOPERATIVE STABILIZING COMBINATION COMPRISING SMALL BUT EFFECTIVE STABILIZING AMOUNTS OF AN EPOXIDE CONTAINING BETWEEN TWO AND TEN CARBON ATOMS, SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED ALIPHATIC HYDROCARBON EPOXIDE AND ALIPHATIC HYDROCARBON EPOXIDES CONTAINING SUBSTITUENT HALOGEN ATOMS, AND AN AMIDE OF A ONE TO FIVE CARBON ATOM UNSUBSTITUED ALIPHATIC FATTY ACID CONTAINING N-SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL AND POLYMETHYLENE RADICALS, SAID N-SUBSTITUENTS CONTAINING A TOTAL OF NOT MORE THAN 6 CARBON ATOMS.
Claim 3
Independent Claim
35 words
THE METHOD OF STABILIZING PERCHLORETHYLENE AGAINST THE FORMATION OF ACIDIC PRODUCTS BY SUPPLYING THERETO A SYNERGISTICALLY COOPERATIVE COMBINATION COMPRISING 0.001 TO 1% BY WEIGHT OF EPICHLORHYDRIN AND 0.001 TO 1% BY WEIGHT OF DIMETHYL FORMAMIDE.
Claim 4
Independent Claim
35 words
THE METHOD OF STABILIZING PERCHLORETHYLENE AGAINST THE FORMATION OF ACIDIC PRODUCTS BY SUPPLYING THERETO A SYNERGISTICALLY COOPERATIVE COMBINATION COMPRISING 0.001 TO 1% BY WEIGHT OF EPICHLORHYDRIN AND 0.001 TO 1% BY WEIGHT OF DIMETHYL FORMAMIDE.
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) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |