US2552807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing spun cellulose derivative staple fibers in alcoholic solutions and then skying
Assignee: Celanese Corp
•
Filing: 1947-10-07
•
Granted: 1951-05-15
•
Expires: 1967-10-07
Abstract
No abstract record available.
Inventors
- 👤 Wilfred T Normand
- 👤 Jr William J Cramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:33
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
PROCESS FOR THE COLORATION OF TEXTILE MATERIALS CONTAINING SPUN YARNS OF STABLE FIBERS HAVING A BASIS OF AN ORGANIC DERIVATIVE OF CELLULOSE, WHICH COMPRISES PADDING SAID TEXTILE MATERIALS WITH A DYEBATH CONSISTING OF, AS THE SOLE COMPONENTS, A DYESTUFF FOR THE TEXTILE MATERIAL DISSOLVED IN A CONCENTRATED LOWER ALIPHATIC ALCOHOL CONTAINING FROM 0 TO 5% BY WEIGHT OF WATER, SKYING THE DYED TEXTILE MATERIAL UNTIL DRY WITHOUT AN INTERMEDIATE WASHING STEP, AND THEN RINSING THE DRY TEXTILE MATERIAL IN WATER.
Claim 2
Dependent Claim
80 words
PROCESS FOR THE COLORATION OF TEXTILE MATERIALS CONTAINING SPUN YARNS OF STABLE FIBERS HAVING A BASIS OF AN ORGANIC DERIVATIVE OF CELLULOSE, WHICH COMPRISES PADDING SAID TEXTILE MATERIALS WITH A DYEBATH CONSISTING OF, AS THE SOLE COMPONENTS, A DYESTUFF FOR THE TEXTILE MATERIAL DISSOLVED IN A CONCENTRATED LOWER ALIPHATIC ALCOHOL CONTAINING FROM 0 TO 5% BY WEIGHT OF WATER, SKYING THE DYED TEXTILE MATERIAL UNTIL DRY WITHOUT AN INTERMEDIATE WASHING STEP, AND THEN RINSING THE DRY TEXTILE MATERIAL IN WATER.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |