US3139410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of polyurethane foams
Assignee: Imperial Chemical Industries Ltd
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Filing: 1961-05-17
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Granted: 1964-06-30
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Expires: 1981-05-17
Abstract
No abstract record available.
Inventors
- 👤 James H Wild
- 👤 Wood John Francis
- 👤 Woods George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0095; C08J9/0061; C08J2375/00; C08J2375/04; C08J2375/06; C08J2483/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN AN IMPROVED PROCESS FOR THE MANUFACTURE OF FOAMED POLYMERIC MATERIAL WHICH COMPRISES THE MIXING AND SIMULTANEOUS INTERACTING OF A HYDROXYL GROUP-CONTAINING POLYETHER, AN ORGANIC POLYISOCYANATE AND WATER; THE IMPROVEMENT COMPRISING CARRYING OUT SAID PROCESS IN THE PRESENCE OF A POLYDIALKYLSILOXANE HAVING A VISCOSITY OF FROM 2 TO 9 CENTISTOKES AT 25*C., A TERTIARY AMINE CATALYST AND A SECOND SURFACTANT SELECTED FROM THE GROUP CONSISTING OF OXYETHLATED PHENOLS, OXYETHYLATED OLEYL ALCOHOL, DIETHYLAMINE OLEATE AND SULFATED METHYL OLEATE.
Claim 2
Dependent Claim
77 words
IN AN IMPROVED PROCESS FOR THE MANUFACTURE OF FOAMED POLYMERIC MATERIAL WHICH COMPRISES THE MIXING AND SIMULTANEOUS INTERACTING OF A HYDROXYL GROUP-CONTAINING POLYETHER, AN ORGANIC POLYISOCYANATE AND WATER; THE IMPROVEMENT COMPRISING CARRYING OUT SAID PROCESS IN THE PRESENCE OF A POLYDIALKYLSILOXANE HAVING A VISCOSITY OF FROM 2 TO 9 CENTISTOKES AT 25*C., A TERTIARY AMINE CATALYST AND A SECOND SURFACTANT SELECTED FROM THE GROUP CONSISTING OF OXYETHLATED PHENOLS, OXYETHYLATED OLEYL ALCOHOL, DIETHYLAMINE OLEATE AND SULFATED METHYL OLEATE.
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) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |