US3792050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-oxo-2h-pyrimido(2,1-a)isoquinoline
Assignee: SmithKline Beecham Corp
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Filing: 1971-08-26
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Granted: 1974-02-12
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Expires: 1991-08-26
Abstract
Abstract THE COMPOUNDS 3,4-DIHYDRO-2-OXO-2H-PYRIMIDO (2,1-A) ISOQUINOLINE AND 3,4,6,7-TETRAHYDRO-2-OXO-2H-PYRIMIDO (2,1-A-)ISOQUINOLINE AND ACID ADDITION SALS THEREOF; PHARMACEUTICAL COMPOSITIONS CONTAINING THEM; AND METHODS OF PREPARAING THE COMPOUNDS, SALTS AND PHARMACEUTICAL COMPOSITIONS. THE COMPOUNDS, SALTS AND COMPOSITIONS ARE USE FUL IN THE TREATMENT OF ARTHRITIS.
Inventors
- 👤 H Hodson
- 👤 A Randall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:18
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; C; C07; C07D; C07D217/00; C07D217/22; C07D471/00; C07D471/02; C07D471/04
Claims Analysis
Total Claims: 0
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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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |