US3660385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-(5-nitro-2-furfurylidene)-1-tetralones
Assignee: Bayer Pharma AG
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Filing: 1970-07-16
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Granted: 1972-05-02
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Expires: 1990-07-16
Abstract
Abstract 2-(5-NITRO-2-FURFURYLIDENE)-1-TETRALONES OF THE FORMULA 2-((-X-C(-NO2)=CH-CH=)>C-CH=),R'',R-TETRALIN-1-ONE WHEREIN X IS O, S, -NH- OR -NCH3-;R IS A FREE OR ESTERIFIED HYDROXY GROUP, HYDROXYALKOXY, ACYLOXYALKOXY, ALKOXYALKOXY, DIALKYLAMINOALKOXY, PYRROLIDINOALKOXY, PIPERIDINOALKOXY, MORPHOLINOALKOXY, PIPERAZINOALKOXY, ACYLAMINO, AMINO, ALKYLSULFONYLAMINO, MONOALKYLAMINO, DIALKYLAMINO, CARBOXY, CARBALKOXY OR NITRO; AND R'' IS A HYDROGEN ATOM, A HALOGEN ATOM, AN ALKYL GROUP, OR A FREE, ETHERIFIED OR ESTERIFIED HYDROXY GROUP, HAVE ANTI-TRICHOMONADAL ACTIVITY.
Inventors
- 👤 Rudolf Albrecht
- 👤 Eberhard Schroder
- 👤 Hans-Joachim Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:09
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/70; C07D307/71; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/42; C07D307/72; C07D307/73; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/42; C07D333/44
Claims Analysis
Total Claims: 0
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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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |