US2607656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of close woven cellulose fabrics by dissolving terylene support yarn
Assignee: Imperial Chemical Industries Ltd
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Filing: 1949-03-08
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Granted: 1952-08-19
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Expires: 1969-03-08
Abstract
No abstract record available.
Inventors
- 👤 Ridge Bertram Pusey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
D; D06; D06Q; D06Q1/00; D06Q1/02; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/38; Y; Y10; Y10S; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR THE PRODUCTION OF IMPROVED FABRIC FROM A TWISTLESS YARN SELECTED FROM THE GROUP CONSISTING OF COTTON AND REGENERATED CELLULOSE YARNS WHICH COMPRISES FORMING A COMPOSITE YARN FROM SAID TWISTLESS YARN AND A YARN OF A HIGHLY POLYMERIZED POLYMETHYLENE TEREPHTHALATE HAVING FROM 2 TO 10, INCLUSIVE, CARBON ATOMS IN THE METHYLENE GROUP, PRODUCING A FABRIC FROM SAID COMPOSITE YARN AND THEREAFTER DISSOLVING OUT SAID POLYMETHYLENE TEREPHTHALATE YARN FROM SAID FABRIC BY IMMERSING SAID FABRIC IN AN .8 TO 4% SOLUTION OF CAUSTIC SODA UNDER A PRESSURE OF FROM 0 TO 60 LBS. PER SQUARE INCH GAUGE FOR A TIME SUFICIENT TO DISSOLVE SAID TEREPHTHALATE YARN UP TO EIGHT HOURS, THE CONDITIONS UTILIZED IN THE DISSOLUTION OF SAID TEREPHTHALATE YARN BEING SUCH AS TO LEAVE SAID TWISTLESS YARN SUBSTANTIALLY UNAFFECTED.
Claim 2
Dependent Claim
131 words
A PROCESS FOR THE PRODUCTION OF IMPROVED FABRIC FROM A TWISTLESS YARN SELECTED FROM THE GROUP CONSISTING OF COTTON AND REGENERATED CELLULOSE YARNS WHICH COMPRISES FORMING A COMPOSITE YARN FROM SAID TWISTLESS YARN AND A YARN OF A HIGHLY POLYMERIZED POLYMETHYLENE TEREPHTHALATE HAVING FROM 2 TO 10, INCLUSIVE, CARBON ATOMS IN THE METHYLENE GROUP, PRODUCING A FABRIC FROM SAID COMPOSITE YARN AND THEREAFTER DISSOLVING OUT SAID POLYMETHYLENE TEREPHTHALATE YARN FROM SAID FABRIC BY IMMERSING SAID FABRIC IN AN .8 TO 4% SOLUTION OF CAUSTIC SODA UNDER A PRESSURE OF FROM 0 TO 60 LBS. PER SQUARE INCH GAUGE FOR A TIME SUFICIENT TO DISSOLVE SAID TEREPHTHALATE YARN UP TO EIGHT HOURS, THE CONDITIONS UTILIZED IN THE DISSOLUTION OF SAID TEREPHTHALATE YARN BEING SUCH AS TO LEAVE SAID TWISTLESS YARN SUBSTANTIALLY UNAFFECTED.
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) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |