Patent US5137279A successfully refreshed from Google Patents.
Patent US3359356A successfully refreshed from Google Patents.
US3359356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for crimping filaments at the spinneret face
Assignee: Monsanto Co
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Filing: 1964-03-02
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Granted: 1967-12-19
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Mylo John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:02
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/20; D01D5/06; D01D5/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
A PROCESS FOR PRODUCING CRIMPED SYNTHETIC FILAMNETS FROM A THERMOPLASTIC COMPOSTION WHICH COMPRISES EXTRUDING SAID COMPOSITION THROUGH A SPINNERET TO FORM CONTINUOUS FILAMENTS, WITHDRAWING THE FILAMENTS FROM THE FACE OF THE SPINNERET AT AN ANGLE TO CUASE PREFERENTIAL ARRANGEMENT OF THE MOLECULAR STRUCTURE OF SAID FILAMENTS, AND HEAT RELAXING THE WITHDRAWN FILAMENTS TO DEVELOP A CRIMPED CONDITION IN SAID FILAMENTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |