US2864825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrrolidines
Assignee: Pharmacia and Upjohn Co
•
Filing: 1952-11-12
•
Granted: 1958-12-16
•
Expires: 1972-11-12
Abstract
No abstract record available.
Inventors
- 👤 Richard V Heinzelman
- 👤 Brooke D Aspergren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:33
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) COMPOUNDS OF THE FORMULA: FIG 01 WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND LOWER-ALKYL RADICALS CONTAINING FROM ONE TO EIGHT CARBON ATOMS INCLUSIVE, AND (B) ACID ADDITION AND QUATERNARY AMMONIUM SALTS THEREOF.
Claim 2
Dependent Claim
47 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) COMPOUNDS OF THE FORMULA: FIG 01 WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND LOWER-ALKYL RADICALS CONTAINING FROM ONE TO EIGHT CARBON ATOMS INCLUSIVE, AND (B) ACID ADDITION AND QUATERNARY AMMONIUM SALTS THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |