Patent US3073787A successfully refreshed from Google Patents.
US3073787A
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Improved process for preparing resilient isocyanate foams
Assignee: EIDP Inc
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Filing: 1957-03-07
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Granted: 1963-01-15
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Expires: 1977-03-07
Abstract
No abstract record available.
Inventors
- 👤 Krakler Stanley Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:36
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN THE PROCESS OF PREPARING A CELLULAR ISOCYANATE PRODUCT BY MIXING A POLYALKYLENEETHER GLYCOL OF A MOLECULAR WEIGHT BELOW ABOUT 10,000 WITH AN ARYLENE POLYISOCYANATE AND WATER, THE IMPROVEMENT WHICH COMPRISES INCORPORATING THEREIN, PRIOR TO THE FORMATION OF A CELLULAR PRODUCT 0.25-3% BY WEIGHT OF THE TOTAL COMPOSITION OF A CATALYST TAKEN FROM THE GROUP CONSISTING OF 3-MORPHOLINOPROPIONAMIDE AND A CATALYST HAVING THE STRUCTURE
Claim 2
Dependent Claim
64 words
IN THE PROCESS OF PREPARING A CELLULAR ISOCYANATE PRODUCT BY MIXING A POLYALKYLENEETHER GLYCOL OF A MOLECULAR WEIGHT BELOW ABOUT 10,000 WITH AN ARYLENE POLYISOCYANATE AND WATER, THE IMPROVEMENT WHICH COMPRISES INCORPORATING THEREIN, PRIOR TO THE FORMATION OF A CELLULAR PRODUCT 0.25-3% BY WEIGHT OF THE TOTAL COMPOSITION OF A CATALYST TAKEN FROM THE GROUP CONSISTING OF 3-MORPHOLINOPROPIONAMIDE AND A CATALYST HAVING THE STRUCTURE
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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |