US2960384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the mechanical and dyeing properties of shaped polyvinyl alcohol structures
Assignee: Kurashiki Rayon Co Ltd
•
Filing: 1955-05-26
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Granted: 1960-11-15
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Expires: 1975-05-26
Abstract
No abstract record available.
Inventors
- 👤 Osugi Tetsuro
- 👤 Tanabe Kenichi
- 👤 Ohno Yasuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:40
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/325; D06M13/328; D06P; D06P3/00; D06P3/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
A METHOD OF PREPARING SOLID POLYVINYL ALCOHOL FILMS AND FIBERS OF IMPROVED DYEABILITY WHICH SHRINK LESS THAN 5 PERCENT OF THEIR LENGTH WHEN IMMERSED FOR 5 MINUTED IN 90*C. WATER WHICH COMPRISES REACTING SOLID HEAT TREATED,ORIENTED POLYVINYL ALCOHOL FILMS AND FIBERS WHICH SHRINK LESS THAN 5 PERCENT OF THEIR LENGTH WHEN IMMERSED FOR 5 MINUTES IN 80*C. WATER WITH A COMPOUND HAVING THE FORMULA
Claim 2
Independent Claim
64 words
A METHOD OF PREPARING SOLID POLYVINYL ALCOHOL FILMS AND FIBERS OF IMPROVED DYEABILITY WHICH SHRINK LESS THAN 5 PERCENT OF THEIR LENGTH WHEN IMMERSED FOR 5 MINUTED IN 90*C. WATER WHICH COMPRISES REACTING SOLID HEAT TREATED,ORIENTED POLYVINYL ALCOHOL FILMS AND FIBERS WHICH SHRINK LESS THAN 5 PERCENT OF THEIR LENGTH WHEN IMMERSED FOR 5 MINUTES IN 80*C. WATER WITH A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
44 words
A SOLID, ORIENTED, SELF-SUPPORTING SHAPED POLYVINYL ALCOHOL STRUCTURE OF IMPROVED DYEABILITY WHICH SHRINKS LESS, THAN 5 PERCENT OF ITS LENGTH WHEN IMMERSED FOR 5 MINUTES IN 90*C. WATER, SAID STRUCTURE CONSISTING ESSENTIALLY OF: 0.1 TO 15 PERCENT AMINO-ACETALIZED VINYL ALCOHOL UNITS HAVING THE FORMULA
Claim 4
Dependent Claim
44 words
A SOLID, ORIENTED, SELF-SUPPORTING SHAPED POLYVINYL ALCOHOL STRUCTURE OF IMPROVED DYEABILITY WHICH SHRINKS LESS, THAN 5 PERCENT OF ITS LENGTH WHEN IMMERSED FOR 5 MINUTES IN 90*C. WATER, SAID STRUCTURE CONSISTING ESSENTIALLY OF: 0.1 TO 15 PERCENT AMINO-ACETALIZED VINYL ALCOHOL UNITS HAVING THE FORMULA
References Cited (Backward Citations)
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US2310943A
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US2380033A
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US2327872A
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US2403464A
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US2636804A
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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) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |