US3213077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallized azo dyes
Assignee: Sandoz AG
•
Filing: 1963-01-18
•
Granted: 1965-10-19
•
Expires: 1983-01-18
Abstract
No abstract record available.
Inventors
- 👤 Maderni Piero
- 👤 Neier Reinhard
- 👤 Wehrli Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:36
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF 1:2 CHROMIUM AND 1:2 COBALT COMPLEX COMPOUNDS OF DYES OF THE FORMULA
Claim 2
Dependent Claim
20 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF 1:2 CHROMIUM AND 1:2 COBALT COMPLEX COMPOUNDS OF DYES OF THE FORMULA
Claim 3
Dependent Claim
18 words
THE 1:2 HETEROGENEOUS CHROMIUM MIXED COMPLEX COMPOUNDS OBTAINED FROM THE MIXTURE OF THE AZO DYES OF THE FORMULA
Claim 4
Dependent Claim
18 words
THE 1:2 HETEROGENEOUS CHROMIUM MIXED COMPLEX COMPOUNDS OBTAINED FROM THE MIXTURE OF THE AZO DYES OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |