US3066032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making fibers of regenerated cellulose of improved dyeing properties
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1960-05-26
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Granted: 1962-11-27
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Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 Fukushima Osamu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:02
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10; C; C08; C08L; C08L1/00; C08L1/08; C08L1/22; C08L1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS OF PRODUCING FIBERS OF REGENERATED CELLULOSE OF IMPROVED PROPERTIES WHICH COMPRISES ADDING TO A VISCOSE MOTHER SOLUTION WATER INSOLUBLE STARCH DERIVATIVES IN FINELY-DIVIDED FORM, MIXING AND DISPERSING SAID DERIVATIVES IN SAID SOLUTION AND SPINNING SAID FIBERS FROM THE RESULTANT SPINNING SOLUTION, SAID DERIVATIVES CONTAINING AT LEAST ABOUT 0.2% BASIC NITROGEN AND BEING THE PRODUCTS RESULTING FROM REACTION OF STARCH WITH A MEMBER OF THE GROUP CONSISTING OF EPOXY COMPOUNDS CONTAINING BASIC NITROGEN, ETHYLENE-IMINE, THE REACTION PRODUCT OF ETHYLENE-IMINE WITH MELAMINE, THE REACTION PRODUCT OF ETHYLENE-IMINE WITH PHOSPHORIC ACID, AND B-AMINOETHYL SULFURIC ACID.
Claim 2
Dependent Claim
94 words
A PROCESS OF PRODUCING FIBERS OF REGENERATED CELLULOSE OF IMPROVED PROPERTIES WHICH COMPRISES ADDING TO A VISCOSE MOTHER SOLUTION WATER INSOLUBLE STARCH DERIVATIVES IN FINELY-DIVIDED FORM, MIXING AND DISPERSING SAID DERIVATIVES IN SAID SOLUTION AND SPINNING SAID FIBERS FROM THE RESULTANT SPINNING SOLUTION, SAID DERIVATIVES CONTAINING AT LEAST ABOUT 0.2% BASIC NITROGEN AND BEING THE PRODUCTS RESULTING FROM REACTION OF STARCH WITH A MEMBER OF THE GROUP CONSISTING OF EPOXY COMPOUNDS CONTAINING BASIC NITROGEN, ETHYLENE-IMINE, THE REACTION PRODUCT OF ETHYLENE-IMINE WITH MELAMINE, THE REACTION PRODUCT OF ETHYLENE-IMINE WITH PHOSPHORIC ACID, AND B-AMINOETHYL SULFURIC ACID.
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) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |