US3726979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing serotonin antagonism
Assignee: Individual
•
Filing: 1971-04-09
•
Granted: 1973-04-10
•
Expires: 1991-04-09
Abstract
Abstract Certain quinazolinedione derivatives have been found to be effective serotonin antagonists when administered to warm blooded animals either orally or parenterally.
Inventors
- 👤 E Hong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:31
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
13 words
A method as in claim 1 in which the compound is administered orally.
Claim 2
Dependent Claim
13 words
A method as in claim 1 in which the compound is administered parenterally.
Claim 3
Dependent Claim
20 words
A method as in claim 2 in which from 4 to 60 mg. per day of the compound is employed.
Claim 4
Dependent Claim
20 words
A method as in claim 3 in which from 0.5 to 15 mg. per day of the compound is employed.
Claim 5
Dependent Claim
14 words
A method as in claim 1 in which the compound employed is a hydrochloride.
Claim 6
Dependent Claim
14 words
A method as in claim 1 in which the compound employed is a maleate.
Claim 7
Dependent Claim
14 words
A method as in claim 1 in which the compound employed is 6-acetamido-3-(3-(4-phenyl-1-piperazyl)propyl)-1,2,3,4-tetrahydroquinazoline-2,4-dione maleate.
Claim 8
Dependent Claim
15 words
A method as in claim 1 in which the compound employed is 3-(3-(4-phenyl-1-piperazyl)propyl)-1,2,3,4-tetrahydroquinazoline-2, 4-dione hydrochloride.
Claim 9
Dependent Claim
14 words
A method as in claim 1 in which the compound employed is 3-(3-(4-p-chlorophenyl-1-piperazyl)propyl)-1,2,3,4-tetrahydroquinazoline-2,4-dione maleate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |