Patent US2406594A successfully refreshed from Google Patents.
US2406594A
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Tertiary amines of heterocyclic compounds
Assignee: CIBA PHARM PROD Inc
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Filing: 1943-12-23
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Granted: 1946-08-27
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Expires: 1963-12-23
Abstract
No abstract record available.
Inventors
- 👤 Djerassi Carl
- 👤 Charles P Huttrer
- 👤 Caesar R Scholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:37
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/20; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/42; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/30; C07D333/36
Claims Analysis
Total Claims: 0
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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) | 1949-08-26 | 1950-02-25 | 1950-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-08-26 | 1954-02-25 | 1954-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-08-26 | 1958-02-25 | 1958-08-27 | $7700.00 | Window Closed / Lapsed |