US3144437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium and cobalt complex compounds of monoazo dyestuffs
Assignee: Sandoz AG
•
Filing: 1958-07-10
•
Granted: 1964-08-11
•
Expires: 1978-07-10
Abstract
No abstract record available.
Inventors
- 👤 Uehlinger Hanspeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:03
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A METAL COMPLEX DYESTUFF WHICH CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
9 words
A METAL COMPLEX DYESTUFF WHICH CORRESPONDS TO THE FORMULA
References Cited (Backward Citations)
US2814615A
Cited
US2241796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |