US3225091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticholinergic substituted butyramides
Assignee: Eli Lilly and Co
•
Filing: 1962-02-01
•
Granted: 1965-12-21
•
Expires: 1982-02-01
Abstract
No abstract record available.
Inventors
- 👤 Ainsworth Cameron
- 👤 Charles W Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:37
CPC Classifications
C; C07; C07C; C07C237/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
19 words
2,2-DIPHENYL-4-(N-NALKYL-T-HYDROCARBYLAMINO)-BUTYRAMIDE WHEREIN N-ALKYL HAS FROM 1 TO 4 CARBON ATOMS AND T-HYDROCARBYL IS A SATURATED C4-C8 TERTIARY HYDROCARBON RADICAL.
Claim 2
Dependent Claim
19 words
2,2-DIPHENYL-4-(N-NALKYL-T-HYDROCARBYLAMINO)-BUTYRAMIDE WHEREIN N-ALKYL HAS FROM 1 TO 4 CARBON ATOMS AND T-HYDROCARBYL IS A SATURATED C4-C8 TERTIARY HYDROCARBON RADICAL.
Claim 3
Dependent Claim
15 words
AN ACID ADDITION SALT OF A COMPOUND OF CLAIM 1 WITH A PHARAMACEUTICALLY ACCEPTABLE ACID.
References Cited (Backward Citations)
US2841589A
Cited
US2823233A
Cited
US2884436A
Cited
GB790102A
Cited
US2934472A
Cited
US2999790A
Cited
DK89981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |