Patent US3560139A successfully refreshed from Google Patents.
US3560139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving cellulose textile material by alkaline treatment
Assignee: Kurashiki Spinning Co Ltd
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Filing: 1967-08-18
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Granted: 1971-02-02
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Expires: 1987-08-18
Abstract
Abstract CELLULOSE TEXTILE MATERIAL IS TREATED WITH A SOLUTION HAVING A HIGH CAUSTIC SODA CONCENTRATION OF 25-35% AT ROOM TEMPERATURE IN THE FIRST STEP, AND THEREAFTER IS TREATED WITH A SOLUTION OF A LOW CAUSTIC SODA CONCENTRATION OF ABOUT 10% AT ROOM TEMPERATURE IN THE SECOND STEP, AND THEREBY THE CELLULOSE TEXTILE MATERIAL SWELLS MUCH MORE THAN CONVENTIONAL ONE-STEP TREATMENT WITH A CAUSTIC SODA SOLUTION. IF THE ABOVE TWO-STEP METHOD IS USED WITHOUT TENSION, THE STRETCHABILITY, MOISTURE ADSORPTION AND DYEING CAPACITIES OF THE CELLULOSE TEXTILE MATERIAL WILL BE IMPROVED; IF WITH TENSION, ITS LUSTER AND STRENGTH WILL BE IMPROVED.
Inventors
- 👤 Toshihiko Suminokura
- 👤 Yojuro Kyogoku
- 👤 Kazuo Sekiguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:01
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/38; D06M11/40
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |