US3277092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5, 6-substituted dihydro-5-fluoropyrimidines
Assignee: F Hoffmann La Roche AG
•
Filing: 1963-05-02
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Granted: 1966-10-04
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Expires: 1983-05-02
Abstract
No abstract record available.
Inventors
- 👤 Duschinsky Robert
- 👤 Hoffer Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:48
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/20; C07D239/22; C07D239/24; C07D239/28; C07D239/46; C07D239/52; C07D239/54; C07D239/545; C07D239/553
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
11 words
A COMPOUND OF THE FORMULA 4-HO,5-F,6-(R1-O-)-1,2,3,4-TETRAHYDROPYRIMIDIN-2-ONE WHEREIN R1 IS LOWER ALKYL.
References Cited (Backward Citations)
US2993039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |