US2925314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of dyeing and printing cellulose derivatives
Assignee: BASF SE
•
Filing: 1955-09-16
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Granted: 1960-02-16
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Eisele Julius
- 👤 Federkiel Wilhelm
- 👤 Schuster Curt
- 👤 Maier Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:27
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/02; D06P5/04; D06P5/06; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/6426; D06P1/645; D06P1/649; D06P1/6492; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
THE METHOD OF DYEING ARTICLES OF CELLULOSE DERIVATIVES, SAID DERIVATIVES BEING EESTERS AND ETHERS OF CELLULOSE WHICH COMPRISES INCORPORATING A CARBAMIC ACID ESTER OF AN AMINOALCOHOL, THE AMINO GROUP OF WHICH IS A TERTIARY AMINO GROUP, IN AN ARTICLE OF ORGANIC CELLULOSE DERIVATIVES AND DYEING SAID ARTICLE WITH A WATERSOLUBLE DYESTUFF CONTAINING AT LEAST ON HYDROPHILIC GROUP SELECTED FROM THE CLASS CONSISTING OF A SULFONIC ACID AND A SULFONIC ACID AMIDE GROUP.
Claim 2
Independent Claim
72 words
THE METHOD OF DYEING ARTICLES OF CELLULOSE DERIVATIVES, SAID DERIVATIVES BEING EESTERS AND ETHERS OF CELLULOSE WHICH COMPRISES INCORPORATING A CARBAMIC ACID ESTER OF AN AMINOALCOHOL, THE AMINO GROUP OF WHICH IS A TERTIARY AMINO GROUP, IN AN ARTICLE OF ORGANIC CELLULOSE DERIVATIVES AND DYEING SAID ARTICLE WITH A WATERSOLUBLE DYESTUFF CONTAINING AT LEAST ON HYDROPHILIC GROUP SELECTED FROM THE CLASS CONSISTING OF A SULFONIC ACID AND A SULFONIC ACID AMIDE GROUP.
References Cited (Backward Citations)
CA492575A
Cited
GB450516A
Cited
US2231891A
Cited
US2317965A
Cited
GB532113A
Cited
GB536686A
Cited
GB613817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |