Patent US3511847A successfully refreshed from Google Patents.
US3511847A
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2,6-di-lower alkyl - 1,4-dihydro - 4-(2-trifluoromethylphenyl) - 3,5 - pyridinedicarboxylic acid esters
Assignee: GlaxoSmithKline LLC
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Filing: 1969-02-19
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Granted: 1970-05-12
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Expires: 1989-02-19
Abstract
No abstract record available.
Inventors
- 👤 Bernard Loev
- 👤 Ralph E Tedeschi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:10
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/80; C07C; C07C45/00; C07C45/42; C07D211/00; C07D211/02; C07D211/04; C07D211/80; C07D211/84; C07D211/90; C07D401/00; C07D401/02; C07D401/04; C07D405/00; C07D405/02; C07D405/04; C07D409/00; C07D409/02; C07D409/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3325505A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |