US2415786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsymmetrically substituted piperazines
Assignee: SmithKline Beecham Corp
•
Filing: 1944-01-06
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Granted: 1947-02-11
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Expires: 1964-01-06
Abstract
No abstract record available.
Inventors
- 👤 Johannes S Buck
- 👤 Baltzly Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:06
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/192; C07D295/02; C07D295/023; C07D295/04; C07D295/06; C07D295/073; C07D295/08; C07D295/084; C07D295/088; C07D295/092; C07D295/096; C07D295/10; C07D295/104; C07D295/108; C07D295/20; C07D295/215; C07D295/22; C07D295/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR698687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-10 | 1950-08-12 | 1951-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-10 | 1954-08-12 | 1955-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-10 | 1958-08-12 | 1959-02-11 | $7700.00 | Window Closed / Lapsed |