Patent US3649720A successfully refreshed from Google Patents.
US3649720A
Expired / Lapsed
US
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O-alkyl-o-(1-carboalkoxy - 1 - propen-2-yl) phosphorochloridates and phosphorothiochlorodates
Assignee: Sandoz AG
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Filing: 1970-07-10
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Granted: 1972-03-14
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Expires: 1990-07-10
Abstract
Abstract THE INVENTION CONCERNS NOVEL COMPOUNDS OF THE FORMULA: R1-O-P(-Z)(=Y)-O-C(CH3)=C(-X)-COO-R3 WHEREIN EACH OF R1 AND R2 IS ALKYL OF 1 TO 5 CARBON ATOMS, X IS HYDROGEN, CHLORINE OR BROMINE, Y IS OXYGEN OR SULPHUR, AND Z IS CHLORINE OR BROMINE. THE COMPOUNDS MAY BE USED AS INTERMEDIATES FOR THE PRODUCTION OF INSECTICIDALLY, ACARICIDALLY AND NEMATOCIDALLY ACTIVE PHOSPHORIC ACID ESTERS.
Inventors
- 👤 Jean-Pierre Leber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:42
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/10; A01N57/12; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/14; C07F9/1403; C07F9/16; C07F9/165; C07F9/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |