US3203948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal complex azo dyes
Assignee: Sandoz AG
•
Filing: 1962-08-03
•
Granted: 1965-08-31
•
Expires: 1982-08-03
Abstract
No abstract record available.
Inventors
- 👤 Neier Reinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:38
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/32; C09B45/00; C09B45/02; C09B45/14; Y; Y10; Y10S; Y10S534/00; Y10S534/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE 1:1-COPPER, 1:1-NICKEL, 1:2-CHROMIUM AND 1:2-COBALT COMPLEX COMPOUNDS OF DYES OF THE FORMULA
Claim 2
Dependent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE 1:1-COPPER, 1:1-NICKEL, 1:2-CHROMIUM AND 1:2-COBALT COMPLEX COMPOUNDS OF DYES OF THE FORMULA
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |