US2973392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of halohydrocarbons
Assignee: PPG Architectural Coatings Canada Inc
•
Filing: 1959-07-20
•
Granted: 1961-02-28
•
Expires: 1979-07-20
Abstract
No abstract record available.
Inventors
- 👤 Graham George Whitlock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:27
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A COMPOSITION OF MATTER COMPRISING TRICHLOROETHYLENE CONTAINING FROM ABOUT 0.001% TO 0.2% BY WEIGHT OF TRIETHYLAMINE, FROM ABOUT 0.01% TO 1.0% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PROPYLENE OXIDE AND BUTYLENE OXIDE, FROM ABOUT 0.01% TO 1.0% BY WEIGHT OF STYRENE OXIDE AND A MINOR AMOUNT OF N-METHYL PYRROLE.
Claim 2
Dependent Claim
54 words
A COMPOSITION OF MATTER COMPRISING TRICHLOROETHYLENE CONTAINING FROM ABOUT 0.001% TO 0.2% BY WEIGHT OF TRIETHYLAMINE, FROM ABOUT 0.01% TO 1.0% BY WEIGHT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PROPYLENE OXIDE AND BUTYLENE OXIDE, FROM ABOUT 0.01% TO 1.0% BY WEIGHT OF STYRENE OXIDE AND A MINOR AMOUNT OF N-METHYL PYRROLE.
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) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |