US3518244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble quaternary amine containing monoazo dyestuffs
Assignee: Hoechst AG
•
Filing: 1967-04-20
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Granted: 1970-06-30
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Expires: 1987-04-20
Abstract
No abstract record available.
Inventors
- 👤 Eberhard Mundlos
- 👤 Reinhard Mohr
- 👤 Johann Ostermeier
- 👤 Bernhard Spieb
- 👤 Kurt Hohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:08
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/02; C09B44/04; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |