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US3328384A
Expired / Lapsed
US
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Water-insoluble acetoacetylamino benzimidazolone monoazo dyestuffs
Assignee: Hoechst AG
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Filing: 1964-04-09
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Granted: 1967-06-27
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Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Dietz Erich
- 👤 Schilling Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:51
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
7 words
A WATER-INSOLUBLE MONOAZO DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
7 words
A WATER-INSOLUBLE MONOAZO DYESTUFF OF THE FORMULA
References Cited (Backward Citations)
US3102879A
Cited
US3109842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |