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Expired European patentEurope

Application of low molecular organic compounds as viscosity regulators for highly viscous technical tenside concentrates

EP 0108321 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 October 24, 1983 and granted May 13, 1987. A European patent lasts at most 20 years from filing, so its term ended October 24, 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 April 24, 2009.
  • 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.
FiledOctober 24, 1983
PublishedMay 16, 1984
GrantedMay 13, 1987
Term endedOctober 24, 2003
Application numberEP 83110590
Classification (CPC)C11D1/12 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedOct 24, 1983PublishedMay 16, 1984Patent grantedMay 13, 1987Term endedOct 24, 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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