US3711316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coloring keratinous fibres with pigment
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1971-02-16
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Granted: 1973-01-16
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Expires: 1991-02-16
Abstract
Abstract TEXTILE MATERIALS CONSISTING WHOLLY OR PARTLY OR WOOL OR OTHER KERATINOUS FIBERS ARE COLORED BY COATING THE FIBERS WITH A DISPERSION OF A FINELY DIVIDED SOLID PIGMENT IN AN AQUEOUS LIQUOR CONTAINING UP TO 4% BY WEIGHT OF A MIXTURE OF A POLYAMIDE-EPICHLORHYDRIN RESIN AND AN ETHERIFIED METHYLOL MELAMINE RESIN, DRYING THE APPLIED DISPERSION ON THE FIBERS, TREATING THE THUS COATED FIBERS WITH AN AQUEOUS EMULSION OF A SOFT ACRYLIC POLYMER CONTAINING FROM 0.5 TO 7% OF THE POLYMER AND DRYING AND CURING THE APPLIED COATING.
Inventors
- 👤 I Angliss
- 👤 M Lipson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:07
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/21; D06M15/263; D06M15/59
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |