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US3503976A
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US
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Production of pyrimidines bearing halogen as substituent in the 5-position
Assignee: BASF SE
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Filing: 1967-04-14
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Granted: 1970-03-31
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Expires: 1987-04-14
Abstract
No abstract record available.
Inventors
- 👤 Franz Reicheneder
- 👤 Karl-Ludwig Hock
- 👤 August Amann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:23
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/30; C07D239/32; C07D239/34; C07D239/36; C07D239/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2377395A
Cited
US2963478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |