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Expired European patentEurope

Basic oil for formulating hydraulic fluids

EP 0486575 B1 · Applicant: Henkel Kommanditgesellschaft auf Aktien

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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 August 8, 1990 and granted November 24, 1993. A European patent lasts at most 20 years from filing, so its term ended August 8, 2010.
  • 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 February 8, 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.
FiledAugust 8, 1990
PublishedMay 27, 1992
GrantedNovember 24, 1993
Term endedAugust 8, 2010
Application numberEP 90912376
Classification (CPC)C10M101/04 +2 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedAug 8, 1990PublishedMay 27, 1992Patent grantedNov 24, 1993Term endedAug 8, 2010

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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