Patent US2650924A successfully refreshed from Google Patents.
US2650924A
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US
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Disubstituted derivatives of 2-thio-6-amino-1, 2, 3, 4-tetrahydro-2, 4-pyrimidinediones
Assignee: GD Searle LLC
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Filing: 1951-12-06
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Granted: 1953-09-01
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Expires: 1971-12-06
Abstract
No abstract record available.
Inventors
- 👤 Papesch Viktor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:27
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/46; C07D239/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
2 - THIO - 6 - AMINO - 1,2,3,4 - TETRAHYDRO2,4-PYRIMIDINEDIONE DERIVATIVES OF THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
16 words
2 - THIO - 6 - AMINO - 1,2,3,4 - TETRAHYDRO2,4-PYRIMIDINEDIONE DERIVATIVES OF THE STRUCTURAL FORMULA
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) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |