US3071571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complex metal compounds of water-
Assignee: —
•
Filing: —
•
Granted: 1963-01-01
•
Expires: 1980-01-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:29
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/22; C09B45/18; C09B45/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A COMPLEX METAL COMPOUND CONTAINING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, COBALT AND NICKEL, OF A WATER-INSOLUBLE AZO-DYESTUFF HAVING THE FORMULA
Claim 2
Dependent Claim
24 words
A COMPLEX METAL COMPOUND CONTAINING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, COBALT AND NICKEL, OF A WATER-INSOLUBLE AZO-DYESTUFF HAVING THE FORMULA
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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |