US2923593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diethylene glycol diacetate as an assistant in the dyeing of cellulose triacetate
Assignee: Acordis UK Ltd
•
Filing: 1956-06-22
•
Granted: 1960-02-02
•
Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 Olpin Henry Charles
- 👤 Taylor Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/40; D06P3/46; D06P3/48; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
PROCESS FOR COLORING CELLULOSE TRIACETATE WHICH COMPRISES APPLYING THERETO AQUEOUS DIETHYLENE GLYCOL DIACETATE AND A COLORING AGENT FOR SAID CELLULOSE TRIACETATE.
Claim 2
Dependent Claim
21 words
PROCESS FOR COLORING CELLULOSE TRIACETATE WHICH COMPRISES APPLYING THERETO AQUEOUS DIETHYLENE GLYCOL DIACETATE AND A COLORING AGENT FOR SAID CELLULOSE TRIACETATE.
References Cited (Backward Citations)
US1792152A
Cited
US2514410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |