US3869492A
Expired / Lapsed
US
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Di-substituted beta-phenethylcarbamic acid esters
Assignee: Aldrich Chemical Co Inc
•
Filing: 1973-08-02
•
Granted: 1975-03-04
•
Expires: 1993-08-02
Abstract
Abstract Novel di-substituted Beta -phenethylcarbamic acid esters. The compounds are useful as antidepressants and anti-Parkinsonism agents.
Inventors
- 👤 John Hans Biel
- 👤 Irwin Lee Klundt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/42; C07C; C07C265/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
13 words
A compound in accordance with claim 1 wherein R1 is H, R2 is
Claim 4
Dependent Claim
14 words
A compound in accordance with claim 2 wherein each R3 and R4 are loweralkyl.
Claim 5
Dependent Claim
14 words
A compound in accordance with claim 3 wherein R3 and R4 each are ethyl.
References Cited (Backward Citations)
US3793342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |