US3790508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-stable polyurethane foam formed by reaction of a polyol and a mixture or aromatic and aliphatic polyisocyanates
Assignee: Foamex LP
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Filing: 1972-03-20
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Granted: 1974-02-05
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Expires: 1992-03-20
Abstract
Abstract A LIGHT-STABLE POLYURETHANE FOAM IS DISCLOSED COMPRISING THE REACTION PRODUCT OF A POLYOL, AN ALIPHATIC ISOCYANATE AND AN AROMATIC ISOCYANATE. THE REACTION IS CARRIED OUT IN THE PRESENCE OF A BLOWING AGENT AND A CATALYST.
Inventors
- 👤 R Triolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:47
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/721; C08G18/724; C08G18/08; C08G18/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |