US3350314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foamable de-icing/defrosting composition and method of de-icing and defrosting
Assignee: Shell USA Inc
•
Filing: 1964-09-15
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Granted: 1967-10-31
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Expires: 1984-09-15
Abstract
No abstract record available.
Inventors
- 👤 Dawtrey Sydney
- 👤 Harold C King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:49
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/08; C09K3/00; C09K3/18; C09K3/185; C09K5/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS OF DEICING/DEFROSTING A SURFACE BY FOAMING A COMPOSITION CONSISTING ESSENTIALLY OF (A) A MAJOR PROPORTION OF ALKYLENE POLYOL SELECTED FROM ETHYLENE GLYCOL, PROPYLENE GLYCOL, GLYCEROL AND MIXTURES THEREOF, (B) WATER, AND (C) FROM ABOUT 0.5% BY WEIGHT TO 5% BY WEIGHT BASED ON TOTAL COMPOSITION OF A SOLUBLE TERTIARY AMINE WHEREIN ONE GROUP ATTACHED TO THE NITROGEN IS A C12-18 ALIPHATIC HYDROCARBYL GROUP AND THE OTHER GROUPS ATTACHED TO THE NITROGEN ATOM ARE POLYOXYALKYLENE GROUPS WHEREIN THE OXYALKYLENE UNITS ARE OXYETHYLENE OXYPROPYLENE OR MIXTURES THEREOF; AND APPLYING THE RESULTING FOAM TO SAID SURFACE.
Claim 2
Dependent Claim
95 words
A PROCESS OF DEICING/DEFROSTING A SURFACE BY FOAMING A COMPOSITION CONSISTING ESSENTIALLY OF (A) A MAJOR PROPORTION OF ALKYLENE POLYOL SELECTED FROM ETHYLENE GLYCOL, PROPYLENE GLYCOL, GLYCEROL AND MIXTURES THEREOF, (B) WATER, AND (C) FROM ABOUT 0.5% BY WEIGHT TO 5% BY WEIGHT BASED ON TOTAL COMPOSITION OF A SOLUBLE TERTIARY AMINE WHEREIN ONE GROUP ATTACHED TO THE NITROGEN IS A C12-18 ALIPHATIC HYDROCARBYL GROUP AND THE OTHER GROUPS ATTACHED TO THE NITROGEN ATOM ARE POLYOXYALKYLENE GROUPS WHEREIN THE OXYALKYLENE UNITS ARE OXYETHYLENE OXYPROPYLENE OR MIXTURES THEREOF; AND APPLYING THE RESULTING FOAM TO SAID SURFACE.
References Cited (Backward Citations)
US2088085A
Cited
US2196042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |