US3269953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized solvent
Assignee: Imperial Chemical Industries Ltd
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Filing: 1964-04-23
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Granted: 1966-08-30
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Expires: 1984-04-23
Abstract
No abstract record available.
Inventors
- 👤 Boothman Eleanor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:39
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
STABILIZED TRICHLOROETHLENE CONSISTING ESSENTIALLY OF TRICHLOROETHYLENE AND, AS THE ESSENTIAL STABILIZING COMPONENTS THEREFOR, (1) FROM 0.05% TO 1.0% BY WEIGHT OF AN ALKOXYLKANOL OF THE FORMULA RO(CH2) OH WHEREIN X HAS A VALUE OF 2 TO 4, AND R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKOXYALKYL SUCH THAT THE TOTAL NUMBER OF CARBON ATOMS IN THE MOLECULE IS GREATER THAN 6; (2) FROM 0.01% TO 0.1% BY WEOIGHT OF N-METHYLPYRROLE; AND (3) FROM 0.1% TO 0.5% BY WEIGHT OF EPOXIDE SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN, BUTENE OXIDWE AND MIXTURE THEREOF.
Claim 2
Dependent Claim
95 words
STABILIZED TRICHLOROETHLENE CONSISTING ESSENTIALLY OF TRICHLOROETHYLENE AND, AS THE ESSENTIAL STABILIZING COMPONENTS THEREFOR, (1) FROM 0.05% TO 1.0% BY WEIGHT OF AN ALKOXYLKANOL OF THE FORMULA RO(CH2) OH WHEREIN X HAS A VALUE OF 2 TO 4, AND R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKOXYALKYL SUCH THAT THE TOTAL NUMBER OF CARBON ATOMS IN THE MOLECULE IS GREATER THAN 6; (2) FROM 0.01% TO 0.1% BY WEOIGHT OF N-METHYLPYRROLE; AND (3) FROM 0.1% TO 0.5% BY WEIGHT OF EPOXIDE SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN, BUTENE OXIDWE AND MIXTURE THEREOF.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |