US3120567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of perchloroethylene with a mixture of an epoxide and an alkoxynitrile
Assignee: PPG Industries Inc
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Filing: 1961-03-21
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Granted: 1964-02-04
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Expires: 1981-03-21
Abstract
No abstract record available.
Inventors
- 👤 William R Dial
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:05
CPC Classifications
C; C23; C23G; C23G5/00; C23G5/02; C23G5/028; C23G5/02854; C23G5/02883; C07; C07C; C07C17/00; C07C17/38; C07C17/42; C07D; C07D303/00; C07D303/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A COMPOSITION OF MATTER COMPRISING PERCHLOROETHYLENE STABILIZED WITH A SMALL STABILIZING AMOUNT OF ALKOXYALKYLNITRILE HAVING UP TO 3 CARBON ATOMS IN THE ALKOXY GROUP AND UP TO 3 CARBON ATOMS IN THE ALKYL GROUP AND A SMALL STABILIZING AMOUNT OF AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF EPOXIDES CONTAINING UP TO 12 CARBON ATOMS AND A CARBON ATOM SKELETON CONTAINING FROM 3 TO 6 CARBON ATOMS, SAID EPOXDE BEING MISCIBLE WITH SAID PERCHLOROETHYLENE, HAVING A BOILING POINT BELOW 200*C. AND A FORMULA:
Claim 2
Dependent Claim
83 words
A COMPOSITION OF MATTER COMPRISING PERCHLOROETHYLENE STABILIZED WITH A SMALL STABILIZING AMOUNT OF ALKOXYALKYLNITRILE HAVING UP TO 3 CARBON ATOMS IN THE ALKOXY GROUP AND UP TO 3 CARBON ATOMS IN THE ALKYL GROUP AND A SMALL STABILIZING AMOUNT OF AN EPOXIDE SELECTED FROM THE GROUP CONSISTING OF EPOXIDES CONTAINING UP TO 12 CARBON ATOMS AND A CARBON ATOM SKELETON CONTAINING FROM 3 TO 6 CARBON ATOMS, SAID EPOXDE BEING MISCIBLE WITH SAID PERCHLOROETHYLENE, HAVING A BOILING POINT BELOW 200*C. AND A FORMULA:
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) | 1967-02-03 | 1967-08-05 | 1968-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-03 | 1971-08-05 | 1972-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-03 | 1975-08-05 | 1976-02-04 | $7700.00 | Window Closed / Lapsed |