US3148935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing textile material consisting of polyacrylonitrile and its copolymers
Assignee: BASF SE
•
Filing: 1956-05-28
•
Granted: 1964-09-15
•
Expires: 1976-05-28
Abstract
No abstract record available.
Inventors
- 👤 Pfitzner Helmut
- 👤 Baumann Hans
- 👤 Eisele Julius
- 👤 Federkiel Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:02
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/0025; 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
26 words
A TEXTILE MATERIAL COMPRISING AN ACRYLONITRILE POLYMER CONTAINING AT LEAST 40% BY WEIGHT OF ACRYLONITRILE WHICH IS COLORED WITH A BASIC CATIONIC DYESTUFF OF THE FORMULA:
Claim 2
Dependent Claim
26 words
A TEXTILE MATERIAL COMPRISING AN ACRYLONITRILE POLYMER CONTAINING AT LEAST 40% BY WEIGHT OF ACRYLONITRILE WHICH IS COLORED WITH A BASIC CATIONIC DYESTUFF OF THE FORMULA:
References Cited (Backward Citations)
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Cited
US2726237A
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US2764466A
Cited
US2768054A
Cited
US2815338A
Cited
US2832764A
Cited
US2893816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |