US3923809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-Alkoxy-5-heterocyclic-1,2,3,6-tetrahydro-4(5H)-pyrimidinethiones
Assignee: GlaxoSmithKline LLC
•
Filing: 1973-08-27
•
Granted: 1975-12-02
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Expires: 1993-08-27
Abstract
Abstract The compounds are 5-alkoxy-5-heterocyclic-1,2,3,6-tetrahydro4(5H)-pyrimidinethiones which are inhibitors of gastric acid secretion.
Inventors
- 👤 Bernard Loev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:50
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/04; C07D401/00; C07D401/02; C07D401/04; C07D403/00; C07D403/02; C07D403/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
10 words
A compound of claim 1 in which R1 is 2-pyridyl.
Claim 4
Dependent Claim
10 words
A compound of claim 1 in which R1 is 2-quinolyl.
Claim 5
Dependent Claim
10 words
A compound of claim 1 in which R2 is methyl.
Claim 6
Dependent Claim
10 words
A compound of claim 1, said compound being 1,2,3,6-tetrahydro-5-methoxy-1,3-dimethyl-5-(2-pyridyl)-4(5H) -pyrimidinethione.
Claim 7
Dependent Claim
9 words
A compound of claim 1, said compound being 1,2,3,6-tetrahydro-5-methoxy-3-methyl-5-(2-pyridyl)-4(5H)-pyrimidinethione.
References Cited (Backward Citations)
US3574213A
Cited
US3510490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |