Patent US3135561A successfully refreshed from Google Patents.
Patent US3591672A successfully refreshed from Google Patents.
US3591672A
Expired / Lapsed
US
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Process for the production of a continuous filamentary yarn
Assignee: Imperial Chemical Industries Ltd
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Filing: 1967-11-22
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Granted: 1971-07-06
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Expires: 1987-11-22
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF A SPUN CONTINUOUS FILAMENT SYNTHETIC YARN HAVING VARIABLE PROPERTIES ALONG ITS LENGTH COMPRISING APPLYING TO THE SPUN, SOLIDIFIED, UNDRAWN YARN A PLASTICISER FOR THE YARN MATERIAL IN AN AMOUNT VARYING ALONG THE LENGTH OF THE YARN TO PRODUCE RELATIVELY PLASTICISED YARN PORTIONS AND RELATIVELY UNPLASTICISED YARN PORTIONS AND THEREAFTER DRAWING THE YARN TO AN EXTENT SUCH THAT VARIABLE PROPERTIES ARE IMPARTED ALONE ITS LENGTH.
Inventors
- 👤 Stanley Davies
- 👤 Haydn Leigh Canton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:42
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/221; D01; D01D; D01D5/00; D01D5/20
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |