US3609135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble benzimidazolone containing monoazo dyestuffs
Assignee: Hoechst AG
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Filing: 1969-11-07
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Granted: 1971-09-28
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Expires: 1989-11-07
Abstract
Abstract WHEREIN X represents a hydrogen or halogen atom, a methyl, trifluoromethyl, methoxy or nitro group, Y a hydrogen or halogen atom and R a hydrogen or halogen atom, a methyl or methoxy group. Said pigments can be used, for instance, for dyeing or printing plastics, caoutchouc, natural and synthetic resins, textile fibrous materials or paper. Furthermore, they can be employed for the preparation of printing inks, lacquers and dispersion paints. The novel pigments possess good to very good fastness properties. Water-insoluble dyestuffs of the general formula
Inventors
- 👤 Joachim Ribka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:10
CPC Classifications
C; C09; C09B; C09B67/00; B; B65; B65D; B65D83/00; B65D83/04; D; D06; D06P; D06P1/00; D06P1/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3109842A
Cited
US3328384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |