Patent US4258202A successfully refreshed from Google Patents.
US4258202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclopropanecarboxylic acids and esters
Assignee: Montedison SpA
•
Filing: 1979-02-26
•
Granted: 1981-03-24
•
Expires: 1999-02-26
Abstract
Abstract Cyclopropanecarboxylic acids and esters are disclosed, having the formula: <IMAGE> (I) wherein A=CF3-C 3BOND C-; <IMAGE> X=H, F, Cl, Br; Y=Cl, Br; R=H, alkyl C1-C4 Compounds of formula I are intermediates for the preparation of insecticide compounds of the pyrethroid type.
Inventors
- 👤 Paolo Piccardi
- 👤 Francesco Corda
- 👤 Franco Gozzo
- 👤 Augusto Menconi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:47
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/40; C07D307/42; A; A01; A01N; A01N53/00; C07C; C07C61/00; C07C61/16; C07C61/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
22 words
A compound having the formula: ##STR34## wherein R is selected from the group consisting of H and C 2 H 5 .
Claim 2
Dependent Claim
22 words
A compound having the formula: ##STR34## wherein R is selected from the group consisting of H and C 2 H 5 .
Claim 3
Dependent Claim
11 words
A compound according to claim 1 and which is 2,2-dimethyl-3-(trifluoromethyl-ethynyl)-cyclopropanecarboxylic acid.
Claim 4
Dependent Claim
14 words
A compound according to claim 1 and which is ethyl ester of 2,2-dimethyl-3-(trifluoromethyl-ethynyl)-cyclopropanecarboxylic acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |