US3179607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl alcohol spinning solution and fibers prepared therefrom
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1961-05-23
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Granted: 1965-04-20
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Expires: 1981-05-23
Abstract
No abstract record available.
Inventors
- 👤 Suda Teruo
- 👤 Miyazaki Sadamaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:35
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; D; D01; D01F; D01F6/00; D01F6/44; D01F6/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A SPINNING SOLUTION EFFECTIVE TO FORM POLYVINYL ALCOHOL FIBERS OF IMPROVED DYEING CHARACTERISTICS WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS SOLUTION OF POLYVINYL ALCOHOL IN COMBINATION WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF GLUCOSE, NONOMETHYL GLUCOSE, DIMETHYL GLUCOSE, TRIMETHYL GLUCOSE, MONOACETYL GLUCOSE, DIACETYL GLUCOSE, TRIACETYL GLUCOSE, AND BETA-GLUCOSAN, SAID MEMBER BEING PRESENT IN SAID SOLUTION IN AN AMOUNT OF FROM 10% TO 35% BASED ON THE WEIGHT OF SAID POLYVINYL ALCOHOL IN SAID SOLUTION.
Claim 2
Dependent Claim
75 words
A SPINNING SOLUTION EFFECTIVE TO FORM POLYVINYL ALCOHOL FIBERS OF IMPROVED DYEING CHARACTERISTICS WHICH CONSISTS ESSENTIALLY OF AN AQUEOUS SOLUTION OF POLYVINYL ALCOHOL IN COMBINATION WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF GLUCOSE, NONOMETHYL GLUCOSE, DIMETHYL GLUCOSE, TRIMETHYL GLUCOSE, MONOACETYL GLUCOSE, DIACETYL GLUCOSE, TRIACETYL GLUCOSE, AND BETA-GLUCOSAN, SAID MEMBER BEING PRESENT IN SAID SOLUTION IN AN AMOUNT OF FROM 10% TO 35% BASED ON THE WEIGHT OF SAID POLYVINYL ALCOHOL IN SAID SOLUTION.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |