US3039167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the properties of fabrics containing cross-linked regenerated cellulose material
Assignee: Courtaulds North America Inc
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Filing: 1959-09-02
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Granted: 1962-06-19
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Expires: 1979-09-02
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey V Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:03
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/01; D06M11/05; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD FOR IMPROVING THE PORPERTIES OF WOVEN AND KNITTED FABRICS CONTAINING AT LEAST 50% REGENERATED CELLULOSE FIBER WHICH HAS BEEN CHEMICALLY CROSS-LINKED WHILE IN THE FORM OF STAPLE TO REDUCE ITS WATER IMBIBITION TO BETWEEN ABOUT 30% AND ABOUT 70%, WHICH COMPRISES SUBJECTING SAID FABRIC TO AGITATAION IN A AQUEOUS MEDIUM AT A PH OF BETWEEN ABOUT 6 AND ABOUT 12, ATA A TEMPERATURE BETWEEN ABOUT 60*C. AND ABOUT 98*C., AND FOR A TIME BETWEEN ABOUT 1/2 AND ABOUT 6 HOURS, AND UNTIL A FULL EVEN COVER IS DEVELOPED.
Claim 2
Independent Claim
90 words
A METHOD FOR IMPROVING THE PORPERTIES OF WOVEN AND KNITTED FABRICS CONTAINING AT LEAST 50% REGENERATED CELLULOSE FIBER WHICH HAS BEEN CHEMICALLY CROSS-LINKED WHILE IN THE FORM OF STAPLE TO REDUCE ITS WATER IMBIBITION TO BETWEEN ABOUT 30% AND ABOUT 70%, WHICH COMPRISES SUBJECTING SAID FABRIC TO AGITATAION IN A AQUEOUS MEDIUM AT A PH OF BETWEEN ABOUT 6 AND ABOUT 12, ATA A TEMPERATURE BETWEEN ABOUT 60*C. AND ABOUT 98*C., AND FOR A TIME BETWEEN ABOUT 1/2 AND ABOUT 6 HOURS, AND UNTIL A FULL EVEN COVER IS DEVELOPED.
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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |