USRE27333E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oih soah
Assignee: —
•
Filing: 1970-09-01
•
Granted: 1972-04-11
•
Expires: 1990-09-01
Abstract
Abstract AN IMPROVEMENT IN THE DYEING AND PRINTING OF POLYAMIDE FIBERS, COMPRISING AN AN AFTER-TREATMENT THE INTRODUCTION OF FIBERS WHICH HAVE BEEN FRESHLY DYED OR PRINTED WITH A FIBER REACTIVE DYESTUFFF, PRIOR TO THE CONVENTIONAL DRYING, INTO AN AQUEOUS BATH WHICH CONTAINS CERTAIN HALOGENTAED ORGANIC PRODUCTS IN COMBINATION WITH A CERTAIN KIND OF TERTIARY SATURATED ALIPHATIC DI-TRI- OR TETRA-AMINE; THE PH OF THE BATH IS ADJUSTED TO ABOUT 4 TO 5.5, AND THE BATH CONTAINING THE FIBERS IS THEN HEATED; ALSO THE AFORESAID AFTER-TREATMENT BATHS PER SE.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:21
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/02; D06P5/04; D06P5/06; D06P1/00; D06P1/44; D06P1/52; D06P1/56; D06P1/62; D06P1/621; D06P1/622; D06P1/625; D06P1/64; D06P1/642; D06P1/645; D06P1/655; D06P1/66; D06P3/00; D06P3/02; D06P3/04; D06P3/10; D06P5/08; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |