US2912296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving the fastness properties of dyeings with substantive dyestuffs
Assignee: Bayer AG
•
Filing: 1954-08-10
•
Granted: 1959-11-10
•
Expires: 1974-08-10
Abstract
No abstract record available.
Inventors
- 👤 Taube Carl
- 👤 Bockmann Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:11
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/649; D06P1/6494; C; C07; C07C; C07C279/00; C07C279/20; C07C279/24; C07C279/26; C07C279/265
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
58 words
THE WATER-SOLUBLE COPPER COMPLEX COMPOUND OBTAINED BY CONTACTING A WATER-SOLUBLE COPPER SALT IN AQUEOUS MEDIUM WITH A WATER-SOLUBLE REACTION PRODUCT FORMED ON HEATING TO THE BOILING POINT IN AQUEOUS MEDIUM A WATER-SOLUBLE, VISCOUS POLYALKYLENE IMINE AND DICYANDIAMIDE IN THE PRESENCE OF A MINERAL ACID, AND WATER-SOLUBLE REACTION PRODUCT CONTAINING A PLURALITY OF UNITS OF THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
58 words
THE WATER-SOLUBLE COPPER COMPLEX COMPOUND OBTAINED BY CONTACTING A WATER-SOLUBLE COPPER SALT IN AQUEOUS MEDIUM WITH A WATER-SOLUBLE REACTION PRODUCT FORMED ON HEATING TO THE BOILING POINT IN AQUEOUS MEDIUM A WATER-SOLUBLE, VISCOUS POLYALKYLENE IMINE AND DICYANDIAMIDE IN THE PRESENCE OF A MINERAL ACID, AND WATER-SOLUBLE REACTION PRODUCT CONTAINING A PLURALITY OF UNITS OF THE FOLLOWING STRUCTURAL FORMULA:
Claim 3
Dependent Claim
26 words
A PROCESS FOR IMPROVING THE FASTNESS PROPERTIES OF DYEINGS WITH SUBSTANTIVE DYESTUFFS WHICH COMPRISES AFTERTREATING THE DYEINGS WITH A WATER-SOLUBLE COPPER COMPLEX COMPOUND OF CLAIM 1.
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |