US2673205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-disubstituted dioxopiperidines and the manufacture thereof
Assignee: CIBA PHARM PROD Inc
•
Filing: 1952-02-04
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Granted: 1954-03-23
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Expires: 1972-02-04
Abstract
No abstract record available.
Inventors
- 👤 Hoffmann Karl
- 👤 Tagmann Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:23
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04; C07D211/00; C07D211/04; C07D211/80; C07D211/84; C07D211/86; C07D211/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A 3,3-DISUBSTITUTED 2,6-DIOXO-PIPERIDINE, ONE OF THE 3-SUBSTITUENTS BEING A MEMBER OF THE GROUP CONSISTING OF A PHENYL RESIDUE AND A PYRIDYL RESIDUE AND THE OTHER 3-SUBSTITUENT BEING AN ALIPHATIC HYDROCARBON RESIDUE OF ONE TO SIX CARBON ATOMS.
Claim 2
Dependent Claim
37 words
A 3,3-DISUBSTITUTED 2,6-DIOXO-PIPERIDINE, ONE OF THE 3-SUBSTITUENTS BEING A MEMBER OF THE GROUP CONSISTING OF A PHENYL RESIDUE AND A PYRIDYL RESIDUE AND THE OTHER 3-SUBSTITUENT BEING AN ALIPHATIC HYDROCARBON RESIDUE OF ONE TO SIX CARBON ATOMS.
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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |