US3663652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane resins in admixture with polyepoxides
Assignee: Novartis Corp
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Filing: 1970-10-27
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Granted: 1972-05-16
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Expires: 1990-10-27
Abstract
Abstract COMPOSITIONS COMPRISING CARBOXYL CONTAINING POLYURETHANE RESINS AND DI- OR POLYEPOXIDE RESINS. THE COMPOSITIONS WHEN CURED HAVE EXCELLENT ADHESION TO UNTREATED AND TREATED SUBSTRATES, EXCELLENT FLEXIBILITY AND GOOD RESISTANCE TO CHEMICAL ATTACK.
Inventors
- 👤 John Allister Cannon
- 👤 Jerome Earl Malone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:20
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/34; C08G18/348; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4246; C08G59/4269; C08L75/00; C08L75/04
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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |