Patent US3852339A successfully refreshed from Google Patents.
US3852339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoalkoxyphenylurea derivatives
Assignee: ER Squibb and Sons LLC
•
Filing: 1972-01-25
•
Granted: 1974-12-03
•
Expires: 1992-01-25
Abstract
Abstract The compounds of this invention are useful as antiarrhythmic agents. Disclosed herein are novel aminoalkoxyphenylurea derivatives having the general formula
Inventors
- 👤 J Krapcho
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:37
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/20; C07D295/215; C07C; C07C275/00; C07C275/28; C07C275/32; C07C275/34; C07C323/00; C07C323/23; C07C323/39; C07C323/43; C07C323/44; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
5 words
A compound having the formula
Claim 4
Dependent Claim
5 words
A compound having the formula
Claim 5
Dependent Claim
5 words
A compound having the formula
Claim 6
Dependent Claim
5 words
A compound having the formula
Claim 7
Dependent Claim
14 words
A compound as in claim 2 wherein the lower alkylene group has three carbons.
Claim 8
Dependent Claim
30 words
A compound as in claim 2 wherein the lower alkylene group has three carbons and each lower alkyl group is methyl or a salt, thereof with a pharmaceutically acceptable acid.
Claim 9
Dependent Claim
10 words
The cyclohexanesulfamic acid salt of the compound of claim 5.
Claim 10
Dependent Claim
10 words
The p-toluenesulfonic acid salt of the compound of claim 5.
Claim 11
Dependent Claim
14 words
A compound as in claim 3 wherein the lower alkylene group has three carbons.
Claim 12
Dependent Claim
21 words
A compound as in claim 3 wherein the lower alkylene group has three carbons and each lower alkyl group is methyl.
References Cited (Backward Citations)
US2714613A
Cited
US2951092A
Cited
US3234255A
Cited
US3534100A
Cited
US3145209A
Cited
US3253037A
Cited
US3352912A
Cited
US3291830A
Cited
US3326663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |