US3109842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble benzeneazo-5-aceto-acetylaminobenzimidazolone dyestuffs
Assignee: Hoechst AG
•
Filing: 1962-09-11
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Granted: 1963-11-05
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Expires: 1982-09-11
Abstract
No abstract record available.
Inventors
- 👤 Schilling Karl
- 👤 Dietz Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:03
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3442; C08K5/3445; C08K5/3447
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE WATER-INSOLUBLE MONOZAO-DYESTUFFS HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
THE WATER-INSOLUBLE MONOZAO-DYESTUFFS HAVING THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |