US2888313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous dyeing process
Assignee: GAF Chemicals Corp
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Filing: 1956-07-23
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Granted: 1959-05-26
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Expires: 1976-07-23
Abstract
No abstract record available.
Inventors
- 👤 Henry R Mautner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:41
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/21; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS COMPRISING CONTINUOUSLY TREATING A RUNNING LENGTH OF FIBROUS MATERIAL CONTAINING POLYAMIDE FIBRES SELECTED FROM THE GROUP CONSISTING OF PROTEIN AND ARTICIAL LINEAR CONDENSATION SUPERPOLYAMIDE FIBRES IN AN AQUEOUS DYE SOLUTION HAVING A PH NOT EXCEEDING ABOUT 7 AND A TEMPERATURE OF ABOUT 175-212*F. AND CONTAINING PER GALLON ABOUT 0.25-8 OUNCES OF AN ACID DYSTUFF AND ABOUT 2-16 OUNCES OF A WATER-MISCIBLE, ORGANIC SOLVENT FOR SAID DYSTUFF SELECTED FROM THE GROUP CONSISTING OF N-LOWER ALKYL-I-PYRROLIDONES AND AGAMMA-LACTONES BOILING ABOVE 225*F. FOR ABOUT 20-90 SECCONDS, REMOVING EXCESS SOLUTION FROM THE DYED RUNNING LENGTH AND THEN STEAMING THE DYED RUNNING LENGTH AT A TEMPERATURE OF ABOUT 212225EF. FOR ABOUT 15 SECONDS TO 5 MINUTES.
Claim 2
Dependent Claim
113 words
A PROCESS COMPRISING CONTINUOUSLY TREATING A RUNNING LENGTH OF FIBROUS MATERIAL CONTAINING POLYAMIDE FIBRES SELECTED FROM THE GROUP CONSISTING OF PROTEIN AND ARTICIAL LINEAR CONDENSATION SUPERPOLYAMIDE FIBRES IN AN AQUEOUS DYE SOLUTION HAVING A PH NOT EXCEEDING ABOUT 7 AND A TEMPERATURE OF ABOUT 175-212*F. AND CONTAINING PER GALLON ABOUT 0.25-8 OUNCES OF AN ACID DYSTUFF AND ABOUT 2-16 OUNCES OF A WATER-MISCIBLE, ORGANIC SOLVENT FOR SAID DYSTUFF SELECTED FROM THE GROUP CONSISTING OF N-LOWER ALKYL-I-PYRROLIDONES AND AGAMMA-LACTONES BOILING ABOVE 225*F. FOR ABOUT 20-90 SECCONDS, REMOVING EXCESS SOLUTION FROM THE DYED RUNNING LENGTH AND THEN STEAMING THE DYED RUNNING LENGTH AT A TEMPERATURE OF ABOUT 212225EF. FOR ABOUT 15 SECONDS TO 5 MINUTES.
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |