US3910924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3,4-Dihydrocarbostyril derivatives and a process for preparing the same
Assignee: Otsuka Pharmaceutical Co Ltd
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Filing: 1973-01-19
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Granted: 1975-10-07
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Expires: 1993-01-19
Abstract
Abstract A novel compound represented by the formula WHEREIN R is defined as hereinafter, having a blocking activity on Beta -adrenergic nerves, a novel intermediate useful for synthesis thereof and processes for preparing the same are disclosed.
Inventors
- 👤 Yasumitsu Tamura
- 👤 Kazuyuki Nakagawa
- 👤 Shiro Yoshizaki
- 👤 Nanami Murakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:18
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22; C07D215/227; C07D215/24; C07D215/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
7 words
A 3,4-DIHYDROCARBOSTYRIL COMPOUND REPRESETED BY THE FORMULA
Claim 2
Dependent Claim
7 words
A 3,4-DIHYDROCARBOSTYRIL COMPOUND REPRESETED BY THE FORMULA
Claim 3
Dependent Claim
5 words
5-(2-Hydroxy-3-methylamino)propoxy-3,4-dihydrocarbostryil according to claim 1.
Claim 4
Dependent Claim
5 words
5-(2-Hydroxy-3-ethylamino)propoxy-3,4-dihydrocarbostyril according to claim 1.
Claim 5
Dependent Claim
5 words
5-(2-Hydroxy-3-propylamino)propoxy-3,4-dihydrocarbostyril according to claim 1.
Claim 6
Dependent Claim
5 words
5-(2-Hydroxy-3-butylamino)propoxy-3,4-dihydrocarbostyril according to claim 1.
Claim 7
Dependent Claim
5 words
5-(2-Hydroxy-3-tert-butylamino)propoxy-3,4-dihydrocarbostyril according to claim 5.
References Cited (Backward Citations)
US3340266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |