Patent US3165488A successfully refreshed from Google Patents.
US3165488A
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Spinning solutions of a mixture of polyvinyl alcohol and a vinyl acetate-vinylidene cyanide copolymer in dimethyl sulfoxide and fibers therefrom
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1960-12-15
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Granted: 1965-01-12
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Expires: 1980-12-15
Abstract
No abstract record available.
Inventors
- 👤 Itoi Kazuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:38
CPC Classifications
C; C08; C08L; C08L29/00; C08L29/02; C08L29/04; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/097; C08L35/00; C08L35/04; D; D01; D01F; D01F6/00; D01F6/44; D01F6/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
SPINNING SOLUTION EFFECTIVE TO BE SPUN INTO FIBERS HAVING HIGH ELASTICITY AND DYEABILITY WHICH COMPRISES DIMETHYLSUFOXIDE HAVING DISSOLVED THEREIN POLYVINYL ALCOHOL AND VINYL ACETATE-VINYLIDENE CYANIDE COPOLYMER, THE WEIGHT RATION BETWEEN SAID POLYVINYL ALCOHOL AND SAID COPOLYMER BEING WITHIN THE RANGE OF FROM 1:1 TO 3: 1 BASED ON THE WEIGHT OF SIAD POLYMERS, AND SAID VINYL ACETATEVINYLIDENE CYANIDE COPOLYMER BEING ESSENTIALLY A 1:1 ALTERNATING COPOLYMER.
Claim 2
Dependent Claim
65 words
SPINNING SOLUTION EFFECTIVE TO BE SPUN INTO FIBERS HAVING HIGH ELASTICITY AND DYEABILITY WHICH COMPRISES DIMETHYLSUFOXIDE HAVING DISSOLVED THEREIN POLYVINYL ALCOHOL AND VINYL ACETATE-VINYLIDENE CYANIDE COPOLYMER, THE WEIGHT RATION BETWEEN SAID POLYVINYL ALCOHOL AND SAID COPOLYMER BEING WITHIN THE RANGE OF FROM 1:1 TO 3: 1 BASED ON THE WEIGHT OF SIAD POLYMERS, AND SAID VINYL ACETATEVINYLIDENE CYANIDE COPOLYMER BEING ESSENTIALLY A 1:1 ALTERNATING COPOLYMER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |