Patent Yard Sign in
Expired European patentEurope

Filter with two distinct filtering stacks

EP 0145552 B1 · Applicant: GEORGES MOATTI, Société Anonyme

EPO PDF

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 November 13, 1984 and granted October 8, 1986. A European patent lasts at most 20 years from filing, so its term ended November 13, 2004.
  • 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, 2010.
  • 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, 1984
PublishedJune 19, 1985
GrantedOctober 8, 1986
Term endedNovember 13, 2004
Application numberEP 84402293
Classification (CPC)B01D25/26 +2 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedNov 13, 1984PublishedJune 19, 1985Patent grantedOct 8, 1986Term endedNov 13, 2004

Sources & verification