Patent US3356445A successfully refreshed from Google Patents.
US3356445A
Expired / Lapsed
US
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Process for dyeing or printing natural nitrogenous fibrous material
Assignee: BASF Schweiz AG
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Filing: 1964-08-05
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Granted: 1967-12-05
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Expires: 1984-08-05
Abstract
No abstract record available.
Inventors
- 👤 Ulrich Paul
- 👤 Bosshard Hans Heinrich
- 👤 Niederer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:37
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/6421; C; C09; C09B; C09B62/00; D06P1/649; D06P1/673; D06P1/67308; D06P3/00; D06P3/02; D06P3/04; D06P3/06; D06P3/10; Y; Y10; Y10S; Y10S8/00; Y10S8/907; Y10S8/908; Y10S8/909; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
PROCESS FOR COLORING NATURAL NITROGENOUS FIBROUS MATERIAL WITH DYESTUFFS THAT ARE AT LEAST DISPERSIBLE IN WATER AND ARE SELECTED FROM THE GROUP CONSISTING OF WATERSOLUBLE REACTIVE DYESTUFFS, ACID WOOL DYESTUFFS AND METAL COMPLEX DYESTUFFS APPLICABLE FROM ACID TO NEUTRAL BATHS, WHICH PROCESS COMPRISES TREATING THE NATURAL NITROGENOUS FIBROUS MATERIAL WITH AN AQUEOUS PREPARATION HAVING A TEMPERATURE FROM 15 TO 40*C. AND CONSISTING OF AT LEAST 5% OF A NITRILE SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, BENZONITRILE, NITRILES OF THE FORMULA
Claim 2
Dependent Claim
81 words
PROCESS FOR COLORING NATURAL NITROGENOUS FIBROUS MATERIAL WITH DYESTUFFS THAT ARE AT LEAST DISPERSIBLE IN WATER AND ARE SELECTED FROM THE GROUP CONSISTING OF WATERSOLUBLE REACTIVE DYESTUFFS, ACID WOOL DYESTUFFS AND METAL COMPLEX DYESTUFFS APPLICABLE FROM ACID TO NEUTRAL BATHS, WHICH PROCESS COMPRISES TREATING THE NATURAL NITROGENOUS FIBROUS MATERIAL WITH AN AQUEOUS PREPARATION HAVING A TEMPERATURE FROM 15 TO 40*C. AND CONSISTING OF AT LEAST 5% OF A NITRILE SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, BENZONITRILE, NITRILES OF THE FORMULA
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) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |