US3069219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colouring cellulose triacetate textile materials
Assignee: Acordis UK Ltd
•
Filing: 1956-06-22
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Granted: 1962-12-18
•
Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 Olpin Henry Charles
- 👤 Wood Jack
- 👤 Savory William James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:25
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; C; C07; C07F; C07F5/00; C07F5/02; C07F5/04; D06P3/00; D06P3/34; D06P3/40; D06P3/46; D06P3/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
METHOD OF INCORPORATING AN ENOLIC AZO COUPLING COMPONENT IN A CELLULOSE TRIACETATE MATERIAL, WHICH COMPRISES ALLOWING THE MATERIAL TO TAKE UP THE COUPLING COMPONENT FROM AN AQUEOUS BATH HAVING DISPERSED THEREIN BOTH THE COUPLING COMPONENT AND AN ASSISTANT CONSISTING ESSENTIALLY OF A SUBSTANTIALLY WATER-INSOLUBLE OXYGEN CONTAINING ORGANIC ESTER WHICH IS A SOLVENT FOR THE COUPLING COMPONENT AND WHICH HAS A SUBSTANTIVE AFFINITY FOR THE CELLULOSE TRIACETATE.
Claim 2
Dependent Claim
66 words
METHOD OF INCORPORATING AN ENOLIC AZO COUPLING COMPONENT IN A CELLULOSE TRIACETATE MATERIAL, WHICH COMPRISES ALLOWING THE MATERIAL TO TAKE UP THE COUPLING COMPONENT FROM AN AQUEOUS BATH HAVING DISPERSED THEREIN BOTH THE COUPLING COMPONENT AND AN ASSISTANT CONSISTING ESSENTIALLY OF A SUBSTANTIALLY WATER-INSOLUBLE OXYGEN CONTAINING ORGANIC ESTER WHICH IS A SOLVENT FOR THE COUPLING COMPONENT AND WHICH HAS A SUBSTANTIVE AFFINITY FOR THE CELLULOSE TRIACETATE.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |