US2852526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted pyrrolidines
Assignee: Merck Sharp & Dohme LLC
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Filing: 1955-05-03
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Granted: 1958-09-16
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Expires: 1975-05-03
Abstract
No abstract record available.
Inventors
- 👤 Villani Frank John
- 👤 Grove Cedar
- 👤 Sperber Nathan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:57
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/08; C07D207/06; C07D207/10; C07D207/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
COMPOUNDS OF THE GROUP CONSISTING OF THE FREE BASES OF THE FOLLOWING FORMULA AND THE THERAPEUTICALLY ACCEPTABLE ACID ADDITION AND QUARTERNARY SALTS THEREOF: WHEREIN R1 IS A MEMBER OF THE GROUP CONSISTING OF H AND OH, R2 IS A MEMBER OF THE GROUP CONSISTING OF H, AND LOWER ALKYL, R3 IS A MEMBER OF THE GROUP CONSISTING OF LOWER ALKYL, LOWER ALKENYL AND BENZYL, X IS A MEMBER OF THE GROUP CONSISTING OF H, HALOGEN, OH, LOWER ALKYL AND LOWER ALKOXY, AND M AND N ARE WHOLE MEMBERS LESS THAN 3. 2. 1-ISOPROPLY-3,4-DIPHENYLPYRROLIDINE METHOBROMIDE.
Claim 2
Dependent Claim
94 words
COMPOUNDS OF THE GROUP CONSISTING OF THE FREE BASES OF THE FOLLOWING FORMULA AND THE THERAPEUTICALLY ACCEPTABLE ACID ADDITION AND QUARTERNARY SALTS THEREOF: WHEREIN R1 IS A MEMBER OF THE GROUP CONSISTING OF H AND OH, R2 IS A MEMBER OF THE GROUP CONSISTING OF H, AND LOWER ALKYL, R3 IS A MEMBER OF THE GROUP CONSISTING OF LOWER ALKYL, LOWER ALKENYL AND BENZYL, X IS A MEMBER OF THE GROUP CONSISTING OF H, HALOGEN, OH, LOWER ALKYL AND LOWER ALKOXY, AND M AND N ARE WHOLE MEMBERS LESS THAN 3. 2. 1-ISOPROPLY-3,4-DIPHENYLPYRROLIDINE METHOBROMIDE.
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |