US3773767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(hydroxy-or methoxy-alkyl)-2-(n'-(hydroxy or methoxy-alkyl)-phenyl-amino)-imidazolines-(2) and salts thereof
Assignee: C.H. Boehringer Sohn AG and Co KG
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Filing: 1971-03-29
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Granted: 1973-11-20
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Expires: 1991-03-29
Abstract
Abstract COMPOUNDS OF THE FORMULA 1-R5,2-((R1,R2,R3-PHENYL)-N(-R4)-)-2-IMIDAZOLIDINE AND NON-TOXIC, PHARMACOLOGICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF; THE COMPOUNDS AS WELL AS THE SALTS ARE USEFUL AS HYPOTENSIVES. R IS HYDROGEN OR METHYL, N IS AN INTEGER FROM 1 TO 6, INCLUSIVE, AND X IS AN INTEGER FROM 1 TO 3, INCLUSIVE, WHERE -CNH2N+1-X(OR)X R1, R2 AND R3, WHICH MAY BE IDENTICAL TO OR DIFFERENT FROM EACH OTHER, ARE EACH HYDROGEN, CHLORINE, FLUORINE, BROMINE, CYANO, TRIFLUOROMETHYL, ALKYL OF 1 TO 3 CARBON ATOMS OR ALKOXY OF 1 TO 3 CARBON ATOMS, AND R4 AND R5, WHICH MUST BE DIFFERENT FROM EACH OTHER, ARE EACH HYDROGEN OR WHEREIN
Inventors
- 👤 H Staehle
- 👤 W Kummer
- 👤 H Koeppe
- 👤 H Samtleben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:35
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/44; C07D233/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |