Patent US3128147A successfully refreshed from Google Patents.
US3128147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating polynosic fibers and products obtained thereby
Assignee: Akzo Nobel UK PLC
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Filing: 1960-11-18
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Granted: 1964-04-07
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Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 Robert S Kenyon
- 👤 Taylor William Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:33
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; D06M11/00; D06M11/07; D06M11/11; D06M11/155; D06M11/32; D06M11/36; D06M11/38; D06M11/40; D06M11/44; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10S; Y10S264/00; Y10S264/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A METHOD FOR MAKING IMPROVED TEXTILE MATERIAL WHICH COMPRISES TREATING REGENERATED CELLULOSE TEXTILE MATERIAL HAVING A DEGREE OF CRYSTALLINITY ABOVE ABOUT 50%, A FINE AND STABLE MICROFIBRILLAR STRUCTURE, A MINIMUM WET STRENGTH OF 2.2 GRAMS PER DENIER AND A WET ELONGATION OF LESS THAN 3.5% AT A STRESS OF 0.5 GRAM PER DENIER, WITH A SWELLING AGENT FOR CELLULOSE EQUIVALENT TO A SOLUTION CONTAINING BETWEEN ABOUT 5 AND ABOUT 40% OF AN ALKALI METAL HYDROXIDE, DRYING THE MATERIAL, AND SUBSEQUENTLY IMPREGNATING SAID MATERIAL WITH A CROSS-LINKING AGENT FOR THE CELLULOSE AND CURING THE IMPREGNATED MATERIAL.
Claim 2
Independent Claim
95 words
A METHOD FOR MAKING IMPROVED TEXTILE MATERIAL WHICH COMPRISES TREATING REGENERATED CELLULOSE TEXTILE MATERIAL HAVING A DEGREE OF CRYSTALLINITY ABOVE ABOUT 50%, A FINE AND STABLE MICROFIBRILLAR STRUCTURE, A MINIMUM WET STRENGTH OF 2.2 GRAMS PER DENIER AND A WET ELONGATION OF LESS THAN 3.5% AT A STRESS OF 0.5 GRAM PER DENIER, WITH A SWELLING AGENT FOR CELLULOSE EQUIVALENT TO A SOLUTION CONTAINING BETWEEN ABOUT 5 AND ABOUT 40% OF AN ALKALI METAL HYDROXIDE, DRYING THE MATERIAL, AND SUBSEQUENTLY IMPREGNATING SAID MATERIAL WITH A CROSS-LINKING AGENT FOR THE CELLULOSE AND CURING THE IMPREGNATED MATERIAL.
References Cited (Backward Citations)
US2504835A
Cited
US2711971A
Cited
US2696477A
Cited
US2752269A
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US2732279A
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US2960484A
Cited
US2902391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |