Patent US3632533A successfully refreshed from Google Patents.
US3632533A
Expired / Lapsed
US
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Heat-sealable polyurethane foam
Assignee: GFC FOAM Corp A CORP OF DE
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Filing: 1967-10-31
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Granted: 1972-01-04
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Expires: 1987-10-31
Abstract
Abstract A HEAT-SEALABLE POLYURETAHNE FOAM FORMED BY REACTION BETWEEN THE FOAM-FORMING INGREDIENTS, IN THE PRESENCE OF SELECTED PLASTISOLS IS DESCRIBED.
Inventors
- 👤 Joseph Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:19
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0095; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/10; C08L; C08L25/00; C08L25/18; C08L27/00; C08L27/02; C08L27/04; C08L27/06; C08L75/00; C08L75/04; C08J2375/00; C08J2375/04
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |