Expired European patentEurope
Method of controlling acarid pests by means of cyclopropane carboxylate esters, the use of such esters as an acaricide, and one of said esters as a novel compound
EP 0002091 B1 · Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed November 13, 1978 and granted June 10, 1981. A European patent lasts at most 20 years from filing, so its term ended November 13, 1998.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by May 13, 2004.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledNovember 13, 1978
PublishedMay 30, 1979
GrantedJune 10, 1981
Term endedNovember 13, 1998
Application numberEP 78200302
Classification (CPC)A01N53/00
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.