US3330896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing bulky yarn
Assignee: Wyeth Holdings LLC
•
Filing: 1963-07-02
•
Granted: 1967-07-11
•
Expires: 1983-07-02
Abstract
No abstract record available.
Inventors
- 👤 Fujita Yoshimasa
- 👤 Nakagawa Kazumi
- 👤 Shimoda Keitaro
- 👤 Miyashita Koji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:17
CPC Classifications
D; D01; D01F; D01F8/00; D01F8/04; D01F8/08; D02; D02G; D02G1/00; D02G1/18; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10S57/00; Y10S57/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR MAKING BULKY YARNS AND FABRICS OF A BLEND OF (A) CRIMPED MULTI-COMPONENT FIBERS OF TWO DISSIMILAR ACRYLONITRILE POLYMERIC COMPONENTS ECCENTRICALLY DISPOSED TOWARDS EACH OTHER IN DISTINCT ZONES EXTENDING THROUGHOUT THE LENGTH OF SAID FIBERS WITH ADJOINING SURFACES IN INTIMATE ADHERING CONTACT, SAID COMPONENTS BEING SELECTED TO HAVE A DIFFERENCE IN THERMAL SHRINKAGE AS SPUN FIBERS OF LESS THAN ABOUT 4% AT 100*C. AND AT LEAST ABOUT 5.5% AT 115*C. AND (B) LOW SHRINKAGE FIBERS; SAID PROCESS COMPRISING CONCURRENTLY SPINNING SAID TWO DISSIMILAR ACRYLONITRILE POLYMER COMPONENTS INTO FIBERS BY EXTRUSION,
Claim 2
Dependent Claim
92 words
A PROCESS FOR MAKING BULKY YARNS AND FABRICS OF A BLEND OF (A) CRIMPED MULTI-COMPONENT FIBERS OF TWO DISSIMILAR ACRYLONITRILE POLYMERIC COMPONENTS ECCENTRICALLY DISPOSED TOWARDS EACH OTHER IN DISTINCT ZONES EXTENDING THROUGHOUT THE LENGTH OF SAID FIBERS WITH ADJOINING SURFACES IN INTIMATE ADHERING CONTACT, SAID COMPONENTS BEING SELECTED TO HAVE A DIFFERENCE IN THERMAL SHRINKAGE AS SPUN FIBERS OF LESS THAN ABOUT 4% AT 100*C. AND AT LEAST ABOUT 5.5% AT 115*C. AND (B) LOW SHRINKAGE FIBERS; SAID PROCESS COMPRISING CONCURRENTLY SPINNING SAID TWO DISSIMILAR ACRYLONITRILE POLYMER COMPONENTS INTO FIBERS BY EXTRUSION,
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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |