Patent US2647035A successfully refreshed from Google Patents.
US2647035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of textile materials using alkylamine alginate thickeners
Assignee: Celanese Corp
•
Filing: 1951-06-30
•
Granted: 1953-07-28
•
Expires: 1971-06-30
Abstract
No abstract record available.
Inventors
- 👤 Jr William J Cramer
- 👤 Jr Harry W Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:01
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/46; D06P1/48; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
PROCESS FOR THE COLORATION OF ORGANIC DERIVATIVE OF CELLULOSE MATERIALS, WHICH COMPRISES APPLYING TO THE SAID MATERIALS A COLORING MEDIUM COMPRISING A SOLUTION OF A DYESTUFF IN A MIXTURE OF WATER AND AT LEAST ABOUT 5% BY WEIGHT OF A LOWER ALIPHATIC ALCOHOL, SAID DYEBATH BEING THICKENED WITH AN ALKYLAMINE ALGINATE SELECTED FROM THE GROUP CONSISTING OF DIETHYLAMINE ALGINATE, DIPROPYLAMINE ALGINATE AND DIBUTYLAMINE ALGINATE.
References Cited (Backward Citations)
US2158486A
Cited
US2514410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-27 | 1957-01-26 | 1957-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-27 | 1961-01-26 | 1961-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-27 | 1965-01-26 | 1965-07-28 | $7700.00 | Window Closed / Lapsed |