US4018818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyl-substituted 2-chloro-α-(tert-butylaminomethyl)-benzylalcohols
Assignee: Abbott Japan Co Ltd
•
Filing: 1975-05-05
•
Granted: 1977-04-19
•
Expires: 1995-05-05
Abstract
Abstract Hydroxyl-substituted-2-chloro-α-(Tert-butylaminomethyl)-benzylalcohols of the formula: ##STR1## and process for their production are disclosed. These compounds are useful as bronchodilators.
Inventors
- 👤 Yuzuro Yamamoto
- 👤 Hideo Kato
- 👤 Sakae Kurata
- 👤 Kazunori Nishide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:37
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/28; A; A61; A61P; A61P11/00; A61P11/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
11 words
A hydroxyl-substituted 2-chloro-α-(tert-butylaminomethyl)-benzylalcohol of the general formula ##STR4## and salts thereof.
Claim 2
Dependent Claim
11 words
A hydroxyl-substituted 2-chloro-α-(tert-butylaminomethyl)-benzylalcohol of the general formula ##STR4## and salts thereof.
Claim 3
Dependent Claim
4 words
2-Chloro-4-hydroxy-α-(tert-butylaminomethyl)-benzylalcohol and its oxalate.
Claim 4
Dependent Claim
4 words
2-Chloro-4-hydroxy-α-(tert-butylaminomethyl)-benzylalcohol and its oxalate.
Claim 5
Dependent Claim
13 words
A hydroxyl-substituted 2-chloro-α-(tert-butylamino-methyl)-benzylalcohol according to claim 1 which is 2-chloro-3-hydroxy-α-(tert-butylaminomethyl)-benzylalcohol and its oxalate.
Claim 6
Dependent Claim
13 words
A hydroxyl-substituted 2-chloro-α-(tert-butylamino-methyl)-benzylalcohol according to claim 1 which is 2-chloro-4-hydroxy-α-(tert-butylaminomethyl)-benzylalcohol and its oxalate.
References Cited (Backward Citations)
US3732300A
Cited
US3714229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |