Patent US3994974A successfully refreshed from Google Patents.
US3994974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
α-Aminomethylbenzyl alcohol derivatives
Assignee: Astellas Pharma Inc
•
Filing: 1974-05-07
•
Granted: 1976-11-30
•
Expires: 1994-05-07
Abstract
Abstract Novel alpha -aminomethylbenzyl alcohol derivatives, particularly alpha -aminoethyl-3-substituted amino-4-hydroxybenzyl alcohol derivatives. The compounds of this invention are useful as bronchodilating agents.
Inventors
- 👤 Masuo Murakami
- 👤 Kozo Takahashi
- 👤 Toshiyasu Mase
- 👤 Kiyoshi Murase
- 👤 Hisashi Ida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:27
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/16; A61K31/165; A61K31/13; A61K31/135; A61K31/185; A61K31/205; C; C07; C07C; C07C215/00; C07C215/74; C07C215/76; C07C233/00; C07C233/01; C07C233/16; C07C237/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
23 words
A compound selected from the group consisting of 3-formylamino-4-hydroxy-α-[N-(1-methyl-2-p-methoxyphenylethyl)aminomethyl]benzyl alcohol of the formula: ##SPC24## and the pharmacologically acceptable non-toxic acid addition salts thereof.
Claim 2
Dependent Claim
23 words
A compound selected from the group consisting of 3-formylamino-4-hydroxy-α-[N-(1-methyl-2-p-methoxyphenylethyl)aminomethyl]benzyl alcohol of the formula: ##SPC24## and the pharmacologically acceptable non-toxic acid addition salts thereof.
Claim 3
Dependent Claim
12 words
A compound according to claim 1 which is 3-formylamino-4-hydroxy-α-[N-(1-methyl-2-p-methoxyphenylethyl)aminomethyl]benzyl alcohol 1/2 fumarate.
Claim 4
Dependent Claim
19 words
A compound according to claim 1 which is 3-formylamino-4-hydroxy-α-[N-(1-methyl-2-p-methoxyphenylethyl)aminomethyl]benzyl alcohol 1/2 fumarate showing melting point (decomposition) of 138°-140° C.
Claim 5
Dependent Claim
20 words
A compound according to claim 1 which is 3-formylamino-4-hydroxy-α-[N-(1-methyl-2-p-methoxyphenylethyl)aminomethyl]-benzyl alcohol of 1/2 fumarate showing melting point (decomposition) of 154°-155° C.
References Cited (Backward Citations)
US2393820A
Cited
US3644520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |