US2986444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of level dyeings of basic dyestuffs on structures of acrylonitrile polymers
Assignee: BASF SE
•
Filing: 1959-05-12
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Granted: 1961-05-30
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Expires: 1979-05-12
Abstract
No abstract record available.
Inventors
- 👤 Rokohl Rudolf
- 👤 Hartmark Bjarne
- 👤 Ploetz Ernst
- 👤 Wegerle Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:25
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/76; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PROCESS FOR THE PRODUCTION OF LEVEL DYEINGS OF BASIC DYESTUFFS ON A TEXTILE MATERIAL OF AN ACRYLONITRILE POLYMER CONTAINING AT LEAST 80 PERCENT BY WEIGHT OF ACRYLONITRILE, WHICH PROCESS COMPRISES TREATING THE POLYMERS AT ANY TIME FROM DURING DYEING UNTIL AFTER DYEING IN AN AQUEOUS BATH WITH AT LEAST ONE QUATERNARY AMMONIUM SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF CATIONS OF THE GENERAL FORMULAE:
Claim 2
Dependent Claim
68 words
A PROCESS FOR THE PRODUCTION OF LEVEL DYEINGS OF BASIC DYESTUFFS ON A TEXTILE MATERIAL OF AN ACRYLONITRILE POLYMER CONTAINING AT LEAST 80 PERCENT BY WEIGHT OF ACRYLONITRILE, WHICH PROCESS COMPRISES TREATING THE POLYMERS AT ANY TIME FROM DURING DYEING UNTIL AFTER DYEING IN AN AQUEOUS BATH WITH AT LEAST ONE QUATERNARY AMMONIUM SALT HAVING A CATION SELECTED FROM THE GROUP CONSISTING OF CATIONS OF THE GENERAL FORMULAE:
References Cited (Backward Citations)
US2254965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |