US4388472A
Expired / Lapsed
US
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Substituted diphenyl ethers
Assignee: Syngenta Ltd
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Filing: 1981-01-13
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Granted: 1983-06-14
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Expires: 2001-01-13
Abstract
Abstract A compound of the formula: ##STR1## and salts and esters thereof, useful as intermediates for the preparation of compounds of the formula ##STR2## wherein R 1 is an alkyl group optionally substituted by one or more fluorine atoms or by an optionally substituted phenyl group R 2 is No 2 or Cl and R 6 is a hydrogen atom or an alkyl group of 1 to 4 carbon atoms.
Inventors
- 👤 David Cartwright
- 👤 David J. Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:41
CPC Classifications
A; A01; A01N; A01N41/00; A01N41/02; A01N41/04; A01N41/06; C; C07; C07C; C07C17/00; C07C17/093; C07C205/00; C07C205/13; C07C205/26; C07C205/49; C07C205/57; C07C205/59; C07C255/00; C07C37/00; C07C37/01; C07C37/045; C07C37/055; C07C65/00; C07C65/21; C07C65/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A compound of the formula: ##STR17## wherein R is hydrogen, or an alkyl group of 1 to 6 carbon atoms.
Claim 2
Dependent Claim
20 words
A compound of the formula: ##STR17## wherein R is hydrogen, or an alkyl group of 1 to 6 carbon atoms.
Claim 3
Dependent Claim
20 words
A compound of the formula: ##STR18## wherein R is hydrogen, or an alkyl group of 1 to 6 carbon atoms.
Claim 4
Dependent Claim
20 words
A compound of the formula: ##STR18## wherein R is hydrogen, or an alkyl group of 1 to 6 carbon atoms.
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) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |