US3083069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the dyeing of polypeptide fibres
Assignee: Novartis AG
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Filing: 1960-08-31
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Granted: 1963-03-26
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Expires: 1980-08-31
Abstract
No abstract record available.
Inventors
- 👤 Hirsbrunner Hans-Rudolf
- 👤 Schaeuble Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:15
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/916
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A PROCESS FOR THE DYEING OF POLYPETIDE FIBRES WITH NEUTRAL TO WEAKLY ACID DRAWING WOOL DYESTUFFS, SAID PROCESS COMPRISING THE STEPS OF (A) IMPREGNATING THE POLYPEPTIDE FIBRES AT A TEMPERATURE WITHIN THE RANGE OF FROM ROOM TEMPERATURE TO 70*C. WITH A LIQUOR CONTAINING AT LEAST ONE OF SAID NEUTRAL TO WEAKLY ACID DRAWING WOOL DYESTUFFS, (B) SQUEEZING OUT EXCESS DYE LIQUOR FROM THE IMPREGNATED GOODS BY PRESSING AND (C) DEVELOPING THE DYEING BY THE APPLICATION OF AN ACID SHOCK BY ENTERING THE IMPREGNATED GOODS INTO AN AT LEAST 50*C. HOT DEVELOPING BATH CONTAINING DILUTE ACID AND, AS SOLVENT FOR THE DYE, BENYL ALCOHOL, AND WITHDRAWING THE DEVELOPED DYEING FROM SAID DEVELOPING BATH AT THE END OF A PERIOD OF AT MOST FIVE MINUTES, WHEREBY THE DYEING OPERATION CAN BE CARRIED OUT IN CONTINUOUS MANNER.
Claim 2
Dependent Claim
134 words
A PROCESS FOR THE DYEING OF POLYPETIDE FIBRES WITH NEUTRAL TO WEAKLY ACID DRAWING WOOL DYESTUFFS, SAID PROCESS COMPRISING THE STEPS OF (A) IMPREGNATING THE POLYPEPTIDE FIBRES AT A TEMPERATURE WITHIN THE RANGE OF FROM ROOM TEMPERATURE TO 70*C. WITH A LIQUOR CONTAINING AT LEAST ONE OF SAID NEUTRAL TO WEAKLY ACID DRAWING WOOL DYESTUFFS, (B) SQUEEZING OUT EXCESS DYE LIQUOR FROM THE IMPREGNATED GOODS BY PRESSING AND (C) DEVELOPING THE DYEING BY THE APPLICATION OF AN ACID SHOCK BY ENTERING THE IMPREGNATED GOODS INTO AN AT LEAST 50*C. HOT DEVELOPING BATH CONTAINING DILUTE ACID AND, AS SOLVENT FOR THE DYE, BENYL ALCOHOL, AND WITHDRAWING THE DEVELOPED DYEING FROM SAID DEVELOPING BATH AT THE END OF A PERIOD OF AT MOST FIVE MINUTES, WHEREBY THE DYEING OPERATION CAN BE CARRIED OUT IN CONTINUOUS MANNER.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |