Patent US3850953A successfully refreshed from Google Patents.
US3850953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imidazole insecticides
Assignee: Beecham Group PLC
•
Filing: 1972-10-27
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Granted: 1974-11-26
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Expires: 1992-10-27
Abstract
Abstract 1. A COMPOUND OF THE FORMULA: X<(-C(-R2)=C(-R3)-N(-O-Z)-C(-R1)=) WHEREIN R1 IS HYDROGEN OR ALKYL OF 1 TO 6 CARBON ATOMS, R2 AND R3 ARE THE SAME OR DIFFERENT AND EACH IS HYDROGEN OR ALKYL OF 1 TO 6 CARBON ATOMS, X IS N OR N>O, AND Z IS CONR4R5 WHEREIN R4 IS HYDROGEN, ALKYL OF 1 TO 6 CARBON ATOMS, BENZYL OR PHENYL AND R5 IS HYDROGEN, ALKYL OF 1 TO 6 CARBON ATOMS OR PHENYL.
Inventors
- 👤 P Mamalis
- 👤 Croix E La
- 👤 S Mhasalker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:22
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/56; C07D233/66; C07D233/90; C07D249/00; C07D249/02; C07D249/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |