Patent BE793086A successfully refreshed from Google Patents.
US3661811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for molding polyurethane foam articles
Assignee: USM Corp
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Filing: 1970-09-09
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Granted: 1972-05-09
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Expires: 1990-09-09
Abstract
Abstract PROCESS AND COMPOSITION FOR MOLDING POLYURETHANE FOAM ARTICLES, PARTICULARLY FOR MOLDING POLYURETHANE FOAM OUTSOLES IN WHICH A DIISOCYANATE IS REACTED WITH A HYDROXYL TERMINATED POLYESTER AND A CHAIN EXTENDER MIXTURE OF AN ALIPHATIC DIOL AND A HYDROXYL TERMINATED ADDUCT OF DIISOCYANATE AND AN ALIPHATIC DIOL.
Inventors
- 👤 Alan Hardy
- 👤 David T Messenger
- 👤 Austin T Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:14
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/22; C08G18/222; C08G18/28; C08G18/30; C08G18/38; C08G18/3819; C08G18/3823; C08G18/3831; C08G18/40; C08G18/42; C08G18/4244; C08G18/4247; C08G18/425
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |