US3785918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerated cellulose fibrous product
Assignee: Mitsubishi Chemical Corp
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Filing: 1970-10-20
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Granted: 1974-01-15
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Expires: 1990-10-20
Abstract
Abstract A FIBROUS PRODUCT COMPRISING A LARGE NUMBER OF REGENERATED CELLULOSE FIBRIL-LIKE MICROFIBERS HAVING A DIAMETER OF 0.1 TO 5U. AT LEAST A PORTION OF SAID FIBRIL-LIKE MICROFIBRES BEING MUTUALLY ENTRANGLED. THE FIBROUS PRODUCT, AHVING A HIGH WATER-RETAINING PROPERTY AND A HIGH APPARENT DEGREE OF SWELLING, IS OBTAINED BY INTRODUCING A VISCOSE SPINING DOPE INTO A COAGULATION LIQUID, WHEREIN A REDUCED PRESSURE GENERATED BY THE HIGH SPEED FLOW OF SAID COAGULATION LIQUID IS EMPOLYED TO APPLY A SHEAR STRESS TO THE SPINNING DOPE.
Inventors
- 👤 A Kawai
- 👤 H Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:15
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/02; D21H13/08; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2973; Y10T428/2978; Y10T428/298
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |