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US3485840A
Expired / Lapsed
US
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2,4-diamino - 5 - (2',4',5'-substituted benzyl) pyrimidines,intermediates and processes
Assignee: F Hoffmann La Roche AG
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Filing: 1965-05-07
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Granted: 1969-12-23
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Expires: 1985-05-07
Abstract
No abstract record available.
Inventors
- 👤 Max Hoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:57
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/30; A; A23; A23K; A23K20/00; A23K20/10; A23K20/116; A23K20/137; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; A61K31/63; A61K31/635; C07C; C07C255/00; C07D239/46; C07D239/48; C07D239/49; C07D239/52; C07D239/54; C07D239/545; C07D239/553
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-22 | 1973-06-23 | 1973-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-22 | 1977-06-23 | 1977-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-22 | 1981-06-23 | 1981-12-23 | $7700.00 | Window Closed / Lapsed |