US2666060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1, 3-bisaminoalkyl-3-phenyl-2, 5-dioxopyrrolidines
Assignee: CIBA PHARM PROD Inc
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Filing: 1952-09-08
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Granted: 1954-01-12
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Expires: 1972-09-08
Abstract
No abstract record available.
Inventors
- 👤 Sury Ernst
- 👤 Hoffmann Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:37
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3-PHENYL-1,3-BIS-(DI-(LOWER-ALKYL) -AMINOLOWER ALKYL) - 2,5 - DIOXO-PYRROLIDINES, 3-PHENYL1,3 - BIS - (PIPERIDINO - LOWER - ALKYL) - 2,5DIOXO-PYRROLIDINES, THE BIS-ACID-ADDITION-SALTS AND THERAPEUTICALLY APPLICABLE BIS-LOWER-ALKYL QUATERNARY AMMONIUM SALTS THEREOF.
Claim 2
Dependent Claim
36 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3-PHENYL-1,3-BIS-(DI-(LOWER-ALKYL) -AMINOLOWER ALKYL) - 2,5 - DIOXO-PYRROLIDINES, 3-PHENYL1,3 - BIS - (PIPERIDINO - LOWER - ALKYL) - 2,5DIOXO-PYRROLIDINES, THE BIS-ACID-ADDITION-SALTS AND THERAPEUTICALLY APPLICABLE BIS-LOWER-ALKYL QUATERNARY AMMONIUM SALTS THEREOF.
References Cited (Backward Citations)
US2555353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |