US3679465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing hardenable epoxy resin compositions
Assignee: Novartis Corp
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Filing: 1970-11-23
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Granted: 1972-07-25
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Expires: 1990-11-23
Abstract
Abstract A PROCESS FOR PRODUCING EPOXIDE COMPOSITIONS USEFUL IN A VARIETYOF APPLICATIONS ESPECIALLY IN COMPRESSION MOLDING IS DISCLOSED. A LOW-BOILING SINGLE OR FORMULATED SOLVENT IS USED TO DISSOLVE THE APPROPRIATE RESIN AND A CURING AGENT THEREFOR AND SAID SOLUTION USED TO COAT OR IMPREGNATE A SUITABLE REINFORCEMENT MATERIAL, PREFERABLY A CONTINUOUS ROVING TYPE. THE SOLVENT IS THEN DRIVEN OFF UNDER CONDITIONS WHCH BY VIRTUE OF THE NATURE OF THE SOLVENT PERMIT SOLVENT EVAPORATION WITHOUT A SUBSTANTIAL PRECURING OF EPOXY RESIN.
Inventors
- 👤 Robert Flynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:58
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/32; C03C25/36; C08J2363/00
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |