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US3514459A
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US
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7-hydroxy-3-aminoalkyl-2-oxo-1,2-dihydroquinoline esters and ethers
Assignee: Cassella Farbwerke Mainkur AG
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Filing: 1968-06-21
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Granted: 1970-05-26
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Expires: 1988-06-21
Abstract
No abstract record available.
Inventors
- 👤 Heinrich Ritter
- 👤 Rudi Beyerle
- 👤 Rolf-Eberhard Nitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:47
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D215/227; A; A61; A61K; A61K31/00
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) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |