US4147694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
8-(1H-Tetrazol-5-yl-carbamoyl)quinoline compounds
Assignee: Riker Laboratories Inc
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Filing: 1977-12-14
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Granted: 1979-04-03
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Expires: 1997-12-14
Abstract
Abstract 8-(1H-Tetrazol-5-ylcarbamoyl)quinolines and pharmaceutically acceptable salts thereof are potent anti-allergic agents.
Inventors
- 👤 Edward H. Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:09
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/12; A; A61; A61P; A61P37/00; A61P37/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
59 words
A compound of the formula ##STR21## wherein R 1 is alkyl or alkoxy of one or two carbon atoms, R 2 is alkyl or alkoxy of one or two carbon atoms, hydrogen, nitro or halogen, R 3 is hydrogen or alkyl of one to four carbon atoms and n is zero, one or two, and pharmaceutically acceptable salts thereof.
Claim 2
Dependent Claim
59 words
A compound of the formula ##STR21## wherein R 1 is alkyl or alkoxy of one or two carbon atoms, R 2 is alkyl or alkoxy of one or two carbon atoms, hydrogen, nitro or halogen, R 3 is hydrogen or alkyl of one to four carbon atoms and n is zero, one or two, and pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim
7 words
The compound 8-(1H-tetrazol-5-ylcarbamoyl)quinoline according to claim 1.
Claim 4
Dependent Claim
7 words
The compound 6-iodo-8-(1H-tetrazol-5-ylcarbamoyl)quinoline according to claim 1.
Claim 5
Dependent Claim
7 words
The compound 8-(2-methyl-1H-tetrazol-5-ylcarbamoyl)quinoline according to claim 1.
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) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |