US2613128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vat dyeing compositions, including a mixture of cobalt phthalocyanine dyes
Assignee: Bayer AG
•
Filing: 1949-03-11
•
Granted: 1952-10-07
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Baumann Fritz
- 👤 Bienert Berthold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:22
CPC Classifications
C; C09; C09B; C09B47/00; C09B47/04; C09B47/06; C09B47/067; C09B47/08; C09B47/10; C09B67/00; C09B67/0032; C09B67/0033; C09B67/0034; C09B67/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A VAT DYEING COMPOSITION COMPRISING A COBALT PHTHALOCYANINE FREE FROM HYDROPHILIC GROUPS, A COBALT PHTHALOCYANINE MONOSULPHONIC ACID, SODIUM HYDROSULPHITE, WATER, AND CAUSTIC SODA.
Claim 2
Dependent Claim
23 words
A VAT DYEING COMPOSITION COMPRISING A COBALT PHTHALOCYANINE FREE FROM HYDROPHILIC GROUPS, A COBALT PHTHALOCYANINE MONOSULPHONIC ACID, SODIUM HYDROSULPHITE, WATER, AND CAUSTIC SODA.
References Cited (Backward Citations)
GB322169A
Cited
US2133340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-07 | 1956-04-07 | 1956-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-07 | 1960-04-07 | 1960-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-07 | 1964-04-07 | 1964-10-07 | $7700.00 | Window Closed / Lapsed |