US3170757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing level dyeings on polyamide fibers
Assignee: Crompton and Knowles Corp
•
Filing: 1962-03-09
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Granted: 1965-02-23
•
Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Harold C Gift
- 👤 Lawrence P Procter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:59
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241; D06P1/00; D06P1/44; D06P1/46; D06P1/48; D06P1/50; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918; Y10S8/92; Y10S8/924; Y10S8/929
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS PRODUCING LEVEL DYEINGS ON POLYAMIDE FIBERS WHICH COMPRISES PASSING THE FIBERS THROUGH AN AQUEOUS BATH HAVING A PH OF ABOUT 6.5 TO 8.5 CONTAINING A WATER SOLUBLE NEUTRAL DYEING DYE FOR SUCH FIBERS AND AN ORGANIC SWELLING AGENT FOR THE FIBERS IN WHICH THE DYE IS SOLUBLE, MAINTAINING THE BATH AT A TEMPERATURE BELOW ABOUT 90*F., REMOVING THE FIBERS FROM THE DYE BATH BEFORE ANY SUBSTANTIAL DEGREE OF DYEING OCCURS AND THEREAFTER SUBJECTING THE TREATED FIBERS TO STEAMING UNDER CONDITIONS COMPARABLE TO THOSE OBTAINED BY ABOUT A 3-MINUTE STEAM TREATMENT AT ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
95 words
A PROCESS PRODUCING LEVEL DYEINGS ON POLYAMIDE FIBERS WHICH COMPRISES PASSING THE FIBERS THROUGH AN AQUEOUS BATH HAVING A PH OF ABOUT 6.5 TO 8.5 CONTAINING A WATER SOLUBLE NEUTRAL DYEING DYE FOR SUCH FIBERS AND AN ORGANIC SWELLING AGENT FOR THE FIBERS IN WHICH THE DYE IS SOLUBLE, MAINTAINING THE BATH AT A TEMPERATURE BELOW ABOUT 90*F., REMOVING THE FIBERS FROM THE DYE BATH BEFORE ANY SUBSTANTIAL DEGREE OF DYEING OCCURS AND THEREAFTER SUBJECTING THE TREATED FIBERS TO STEAMING UNDER CONDITIONS COMPARABLE TO THOSE OBTAINED BY ABOUT A 3-MINUTE STEAM TREATMENT AT ATMOSPHERIC PRESSURE.
References Cited (Backward Citations)
US2487197A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |