US3737352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced plastics materials
Assignee: Novartis AG
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Filing: 1970-11-25
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Granted: 1973-06-05
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Expires: 1990-11-25
Abstract
Abstract THE INVENTION RELATES TO PROCESS FOR PRODUCING A RESINIMPREGNATED TAPE FROM A PLURALITY OF TOWS OF FIBRES WHICH COMPRISES IMPREGNATING THE SAID TOWS WITH A SOLUTION OF A FIRST RESIN IN A VOLATILE SOLVENT, SHAPING EACH TOW INTO THE FORM OF A RIBBON OF SUBSTANTIALLY CONSTANT WIDTH, REMOVING SUBSTANTIALLY ALL THE SOLVENT FROM EACH RIBBON, ALIGNING THE IMPREGNATED RIBBONS IN AN ABUTTING EDGETO-EDGE RELATIONSHIP, AND CONTACTING THE UPPER AND LOWER SURFACES OF THE ALIGNED RIBBONS WITH A SECOND RESIN UNDER CONDITIONS SUCH THAT THE SAID SECOND RESIN FLOWS ABOUT THE RIBBONS TO FORM A COHERENT RESIN-IMPREGNATED TAPE THEREFROM.
Inventors
- 👤 V Avis
- 👤 A Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:33
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/10; D; D01; D01F; D01F11/00; D01F11/10; D01F11/14; B29K; B29K2307/00; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/10; B32B2262/106; B32B2405/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |