US3350871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn blend
Assignee: EIDP Inc
•
Filing: 1964-08-03
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Granted: 1967-11-07
•
Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Pierce Norwin Caley
- 👤 Reese Cecil Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:03
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN IMPROVED COMPOSITE YARN COMPRISING A PHYSICAL BLEND OF AT LEAST TWO SPECIES OF FILAMENTS HAVING DIFFERENT SHRINKABILITIES, AT LEAST ONE SPECIES BEING A POLYESTER PARTLY CRYSTALLINE IN STABLE CONFORMATION NOT GREATER THAN 90% OF THE LENGTH OF ITS FULLY EXTENDED MOLECULAR CONFORMATION, AND AT LEAST ONE OTHER SPECIES BEING ONE WHICH IS MORE EXTENDED IN ITS CRYSTALLINE CONFORMATION THAN THE FIRST SPECIES IN THE RESULTING COMPOSITE YARN.
Claim 2
Dependent Claim
68 words
AN IMPROVED COMPOSITE YARN COMPRISING A PHYSICAL BLEND OF AT LEAST TWO SPECIES OF FILAMENTS HAVING DIFFERENT SHRINKABILITIES, AT LEAST ONE SPECIES BEING A POLYESTER PARTLY CRYSTALLINE IN STABLE CONFORMATION NOT GREATER THAN 90% OF THE LENGTH OF ITS FULLY EXTENDED MOLECULAR CONFORMATION, AND AT LEAST ONE OTHER SPECIES BEING ONE WHICH IS MORE EXTENDED IN ITS CRYSTALLINE CONFORMATION THAN THE FIRST SPECIES IN THE RESULTING COMPOSITE YARN.
References Cited (Backward Citations)
US3199281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |