Patent US3555003A successfully refreshed from Google Patents.
US3555003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble benzimidazolone containing monoazo dyestuffs
Assignee: Hoechst AG
•
Filing: 1968-10-22
•
Granted: 1971-01-12
•
Expires: 1988-10-22
Abstract
Abstract WATER-INSOLUBLE MONOAZO DYESTUFFS CONSISTING OF 5AMINO-ISOPHTHALIC-ACID-DIMETHYLESTER AS DIAZO COMPONENT AND 5 - ACETOACETYLAMINO - BENZIMIDAZOLONES AS COUPLING COMPONENT AND PROCESS FOR THEIR PREPARATION. SAID PIGMENTS ARE ESPECIALLY SUITABLE FOR DYENG AND PRITING PLASTICS CAOUTCHOUC, RESINS OF NATURAL OR SYNTHETIC ORIGIN, FIBROUS TEXTILE MATERIALS OR PAPER. MOREOVER, THE PIGMENTS CAN BE USED FOR THE PREPARATION OF DISPERSION PAINTS, LACQUERS AND PRINTING INKS.
Inventors
- 👤 Joachim Ribka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:53
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |