US2649353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of nylon and acetate silk in
Assignee: —
•
Filing: —
•
Granted: 1953-08-18
•
Expires: 1970-08-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/645; D06P1/649; D06P1/6494; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241; D06P3/58; D06P3/60; D06P3/66; D06P3/82; D06P3/8204; Y; Y10; Y10S; Y10S101/00; Y10S101/29; Y10S8/00; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
99 words
IN THE PROCESS OF DYEING NYLON ON THE FIBER BY IMPREGNATING THE FIBERS WITH AN AMINE BASE AND A NAPHTHOL AS COUPLING COMPONENT SIMULTANEOUSLY AND SUBSEQUENTLY DIAZOTIZING THE BASE AND COUPLING THE DIAZO WITH THE COUPLING COMPONENT, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE IMPREGNATION OF THE FIBERS WITH SAID COUPLING COMPONENT IN THE PRESENT OF AN AMOUNT OF A GUANIDINE COMPOUND AT LEAST MOLECULARLY EQUIVALENT TO THE NAPHTHOL AS BUT WITHIN THE LIMITS OF 1% TO 5% BY WEIGHT OF THE FIBERS TO BE DYED, SAID GUANIDINE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE OF THE FOLLOWING FORMULAE:
Claim 2
Dependent Claim
99 words
IN THE PROCESS OF DYEING NYLON ON THE FIBER BY IMPREGNATING THE FIBERS WITH AN AMINE BASE AND A NAPHTHOL AS COUPLING COMPONENT SIMULTANEOUSLY AND SUBSEQUENTLY DIAZOTIZING THE BASE AND COUPLING THE DIAZO WITH THE COUPLING COMPONENT, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE IMPREGNATION OF THE FIBERS WITH SAID COUPLING COMPONENT IN THE PRESENT OF AN AMOUNT OF A GUANIDINE COMPOUND AT LEAST MOLECULARLY EQUIVALENT TO THE NAPHTHOL AS BUT WITHIN THE LIMITS OF 1% TO 5% BY WEIGHT OF THE FIBERS TO BE DYED, SAID GUANIDINE COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE OF THE FOLLOWING FORMULAE:
Claim 3
Dependent Claim
31 words
THE PROCESS AS DEFINED IN CLAIM 1 WHEREIN THE FIBERS ARE IMPREGNATED IN THE PRESENCE OF THE GUANIDINE COMPOUND WITH AN AQUEOUS SOLUTION OF THE AMINE BASE AND THE COUPLING COMPONENT.
References Cited (Backward Citations)
FR643323A
Cited
DE486696C
Cited
US1963974A
Cited
GB348269A
Cited
US1822548A
Cited
GB502861A
Cited
US2190746A
Cited
US2304821A
Cited
US2367534A
Cited
US2385719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |