US3582501A
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US
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Polyurethane foams and process of making them
Assignee: Union Carbide Corp
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Filing: 1958-11-21
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Granted: 1971-06-01
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Expires: 1978-11-21
Abstract
Abstract THIS INVENTION RELATES TO THE ACCELERATION OF REACTIONS BETWEEN COMPOUNDS HAVING A REACTIVE GROUP OF THE FORMULA-N=C=Y, IN WHICH H IS OXYGEN OR SULFUR, WITH ACTIVE HYDROGEN-CONTAINING COMPOUNDS BY THE ADDITION OF A CATALYST COMPOSITION COMPRISING A TERTIARY AMINE AND AN ORGANO TIN COMPOUND HAVING AT LEAST ONE DIRECT CARBON TO TIN BOND.
Inventors
- 👤 Fritz Hostettler
- 👤 Eugene F Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:12
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/165; C08G18/22; C08G18/24; C08G18/242; C08G18/28; C08G18/40; C08G18/48; C08G18/4833; C08G18/4837; C08G18/4841; C08G18/50; C08G18/5021; C08G18/65; C08G18/66; C08G18/6666; C08G18/667; C08G18/70; F; F27; F27B; F27B5/00; F27B5/04; C08G2110/00; C08G2110/0008; C08G2110/0016; C08G2110/0025; C08G2110/0041; C08G2110/005; C08G2110/0058; C08G2110/0083; C08J2375/00; C08J2375/04; C08J2375/08; C08J2483/00
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |