US2743231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the dyeing of nylon fibers and fabrics with 5-chlorosalicylic acid
Assignee: Heyden Chemical Corp
•
Filing: 1951-12-08
•
Granted: 1956-04-24
•
Expires: 1971-12-08
Abstract
No abstract record available.
Inventors
- 👤 David X Klein
- 👤 Falcon James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:35
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/653; D06P1/6536; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROCESS FOR COLORING NYLON FIBERS AND FABRICES, THE IMPROVEMENT WHICH COMPRISES PRETREATING THE NYLON MATERIAL IN AN AQUEOUS SOLUTION CONTAINING FROM 0.5% TO 1.5% BY WEIGHT OF 5-CHLOROSALICYLIC ACID AND WHILE THE AQUEOUS SOLUTION IS AT A TEMPERATURE BETWEEN 180* F. AND THE BOILING POINT OF THE AQUEOUS SOLUTION, WASHING THE MATERIAL THUS TREATED AND SUBSEQUENTLY DYEING SAID MATERIAL.
Claim 2
Dependent Claim
61 words
IN A PROCESS FOR COLORING NYLON FIBERS AND FABRICES, THE IMPROVEMENT WHICH COMPRISES PRETREATING THE NYLON MATERIAL IN AN AQUEOUS SOLUTION CONTAINING FROM 0.5% TO 1.5% BY WEIGHT OF 5-CHLOROSALICYLIC ACID AND WHILE THE AQUEOUS SOLUTION IS AT A TEMPERATURE BETWEEN 180* F. AND THE BOILING POINT OF THE AQUEOUS SOLUTION, WASHING THE MATERIAL THUS TREATED AND SUBSEQUENTLY DYEING SAID MATERIAL.
References Cited (Backward Citations)
GB614009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |