Expired European patentEurope
Dialkoxymethylimidazolidine derivatives, preparation thereof, insecticides containing same as an effective ingredient and intermediates therefor
EP 0455000 B1 · Applicant: MITSUI TOATSU CHEMICALS, Inc.
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
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 April 2, 1991 and granted January 31, 1996. A European patent lasts at most 20 years from filing, so its term ended April 2, 2011.
- 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 October 2, 2016.
- 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.
FiledApril 2, 1991
PublishedNovember 6, 1991
GrantedJanuary 31, 1996
Term endedApril 2, 2011
Application numberEP 91105171
Classification (CPC)C07D417/14 +2 more
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.