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Expired European patentEurope

Multiple hydrocyclone apparatus

EP 0090928 B1 · Applicant: CLARK & VICARIO CORPORATION

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Overview

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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.

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Why it's free to use

  • Filed February 11, 1983 and granted November 4, 1987. A European patent lasts at most 20 years from filing, so its term ended February 11, 2003.
  • 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 August 11, 2008.
  • 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.
FiledFebruary 11, 1983
PublishedOctober 12, 1983
GrantedNovember 4, 1987
Term endedFebruary 11, 2003
Application numberEP 83101325
Classification (CPC)D21D5/24 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedFeb 11, 1983PublishedOct 12, 1983Patent grantedNov 4, 1987Term endedFeb 11, 2003

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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