US3853893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anthelmintic 5-(pyridyl)-3-(isothiocyanophenyl) oxadiazoles
Assignee: ER Squibb and Sons LLC
•
Filing: 1973-04-02
•
Granted: 1974-12-10
•
Expires: 1993-04-02
Abstract
Abstract 5-(Heterocyclyl)-3-(isothiocyanophenyl)oxadiazoles and related compounds and their methods of preparation are disclosed. In addition, useful compositions and methods for employing said compositions as anthelmintics are taught.
Inventors
- 👤 V Narayanan
- 👤 R Haugwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:25
CPC Classifications
C; C07; C07D; C07D271/00; C07D271/02; C07D271/06; C07C; C07C259/00; C07C259/12; C07C259/18
Claims Analysis
Total Claims: 12
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
11 words
The compound of claim 1 wherein R is hydrogen or chlorine.
Claim 4
Dependent Claim
9 words
The compound of claim 1 wherein R is hydrogen.
Claim 5
Dependent Claim
5 words
A compound of the formula:
Claim 6
Dependent Claim
5 words
A compound of the formula:
Claim 7
Dependent Claim
12 words
The compound of formula 4 having the name isothiocyanic acid, p-(5-(2-pyridyl)-1,2,4-oxadiazol-3-yl)phenyl ester.
Claim 8
Dependent Claim
12 words
The compound of formula 4 having the name isothiocyanic acid, p-(5-(2-pyridyl)-1,2,4-oxadiazol-3-yl)phenyl ester.
Claim 9
Dependent Claim
12 words
The compound of formula 4 having the name isothiocyanic acid, p-(5-(3-pyridyl)-1,2,4-oxadiazol-3-yl)phenyl ester.
Claim 10
Dependent Claim
12 words
The compound of formula 4 having the name isothiocyanic acid, p-(5-(3-pyridyl)-1,2,4-oxadiazol-3-yl)phenyl ester.
Claim 11
Dependent Claim
12 words
The compound of formula 4 having the name isothiocyanic acid, p-(5-(4-pyridyl)-1,2,4-oxadiazol-3-yl)phenyl ester.
Claim 12
Dependent Claim
12 words
The compound of formula 4 having the name isothiocyanic acid, p-(5-(4-pyridyl)-1,2,4-oxadiazol-3-yl)phenyl ester.
References Cited (Backward Citations)
US3651054A
Cited
US3647809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |