US3116278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble azo-dyestuffs
Assignee: Hoechst AG
•
Filing: 1961-04-25
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Granted: 1963-12-31
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Expires: 1981-04-25
Abstract
No abstract record available.
Inventors
- 👤 Gross Richard
- 👤 Hcrtel Hasso
- 👤 Mohr Reinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:36
CPC Classifications
C; C09; C09B; C09B33/00; C09B33/02; C09B33/153
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)
GB458843A
Cited
US2432419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |