US3141728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the improvement of the fastness to washing of direct dyeings on cellulose-containing materials
Assignee: Bayer AG
•
Filing: 1960-12-20
•
Granted: 1964-07-21
•
Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 Bockmann Klaus
- 👤 Taube Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:55
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/655; D06P1/66; D06P1/52; D06P1/56; D06P5/00; D06P5/02; D06P5/04; D06P5/06; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
PROCESS FOR IMPROVING THE FASTNESS TO WASHING OF DIRECT DYEINGS AN CELLULOSE-CONTAINING MATERIALS WHICH COMPRISES TREATING THE DIRECT DYEINGS ON CELLULOSE-CONTAINING MATERIALS WITH A QUATERNARY POLYALKYLENE-POLYOMINE AND A RESINOUS INTERMEDIATE PRODUCT SIMULTANEOUSLY AND SUBSEQUENTLY HARDENING THE RESINOUS INTERMEDIATE PRODUCT.
Claim 2
Dependent Claim
39 words
PROCESS FOR IMPROVING THE FASTNESS TO WASHING OF DIRECT DYEINGS AN CELLULOSE-CONTAINING MATERIALS WHICH COMPRISES TREATING THE DIRECT DYEINGS ON CELLULOSE-CONTAINING MATERIALS WITH A QUATERNARY POLYALKYLENE-POLYOMINE AND A RESINOUS INTERMEDIATE PRODUCT SIMULTANEOUSLY AND SUBSEQUENTLY HARDENING THE RESINOUS INTERMEDIATE PRODUCT.
References Cited (Backward Citations)
US2093651A
Cited
US2312199A
Cited
US2777839A
Cited
US2917504A
Cited
US2955014A
Cited
US2973239A
Cited
US3009761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |