US3544548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble monoazo dyestuffs
Assignee: Hoechst AG
•
Filing: 1968-07-02
•
Granted: 1970-12-01
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Expires: 1988-07-02
Abstract
No abstract record available.
Inventors
- 👤 Dieter Gunther
- 👤 Ernst Hoyer
- 👤 Heinz Schmidt
- 👤 Hansjorg Vollmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:30
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2873268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |