Patent US3137675A successfully refreshed from Google Patents.
US3137675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibers and shaped articles consisting of acetalized polyvinyl alcohol and a copolymer of vinylidene cyanide and vinyl acetate and method of making same
Assignee: Kurashiki Rayon Co Ltd
•
Filing: 1961-03-02
•
Granted: 1964-06-16
•
Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 Matsubayashi Kanji
- 👤 Fukushima Osamu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:41
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/44; D01F6/52; D01F6/50; D01F6/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD FOR MANUFACTURING SHAPED ARTICLES WHICH COMPRISES MIXING (1) 10 TO 60 WEIGHT PERCENT OF A REACTION PRODUCT INSOLUBLE IN WATER BUT SOLUBLE IN AN ORGANIC SOLVENT OF A POLYMER OF VINYL ALCOHOL AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALEDHYE WITH UP TO 9 CARBON ATOMS, ACRYLONITRILE, UREA, PHENYL ISOCYANATE, PHENYLUREA, A CARBOXYILC ACID WITH UP TO 7 CARBON ATOMS, ETHYLENE IMINE, 1-DIMETHYL-AMINI-2,3-EPOXY PROPANE, 1-METHYLETHYLAMINO-2,3-EOPXY PROPANE, AN AMINOALDEHYDE WITH UP TO 10 CARBON ATOMS, ALLYLAMINE, DIETHYLALLYLAMINE, B-DIETHYLAMINOETHYL METHACRYLATE, 4-VINYLPRIDINE, 2-VINYLPYRIDINE, 2-METHYL-5-VINYLPYRIDINE, A SULFOALDEHYDE WITH UP TO 7 CARBON ATOMS AND MIXTURES THEREOF AND (2) 90 TO 40 WEIGHT PERCENT OF A COPOLYMER OF VINYLIDENE CYANIDE AND VINYL ACETATE.
Claim 2
Independent Claim
113 words
A METHOD FOR MANUFACTURING SHAPED ARTICLES WHICH COMPRISES MIXING (1) 10 TO 60 WEIGHT PERCENT OF A REACTION PRODUCT INSOLUBLE IN WATER BUT SOLUBLE IN AN ORGANIC SOLVENT OF A POLYMER OF VINYL ALCOHOL AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALEDHYE WITH UP TO 9 CARBON ATOMS, ACRYLONITRILE, UREA, PHENYL ISOCYANATE, PHENYLUREA, A CARBOXYILC ACID WITH UP TO 7 CARBON ATOMS, ETHYLENE IMINE, 1-DIMETHYL-AMINI-2,3-EPOXY PROPANE, 1-METHYLETHYLAMINO-2,3-EOPXY PROPANE, AN AMINOALDEHYDE WITH UP TO 10 CARBON ATOMS, ALLYLAMINE, DIETHYLALLYLAMINE, B-DIETHYLAMINOETHYL METHACRYLATE, 4-VINYLPRIDINE, 2-VINYLPYRIDINE, 2-METHYL-5-VINYLPYRIDINE, A SULFOALDEHYDE WITH UP TO 7 CARBON ATOMS AND MIXTURES THEREOF AND (2) 90 TO 40 WEIGHT PERCENT OF A COPOLYMER OF VINYLIDENE CYANIDE AND VINYL ACETATE.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |