US2966483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Green polyazo-dyestuffs
Assignee: Hoechst AG
•
Filing: 1957-12-17
•
Granted: 1960-12-27
•
Expires: 1977-12-17
Abstract
No abstract record available.
Inventors
- 👤 Gies Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:29
CPC Classifications
C; C09; C09B; C09B35/00; C09B35/38; C09B35/44; C09B35/46; C09B35/463
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
THE POLYAZO-DYESTUFF CORRESPONDING TO THE FOLLOWING FORMULA
Claim 2
Dependent Claim
7 words
THE POLYAZO-DYESTUFF CORRESPONDING TO THE FOLLOWING FORMULA
References Cited (Backward Citations)
US2202350A
Cited
DE737626C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |