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Expired European patentEurope

Block copolymers as foam regulators in washing or cleaning agents

EP 0678117 B1 · Applicant: Henkel Kommanditgesellschaft auf Aktien

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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 December 27, 1993 and granted August 28, 1996. A European patent lasts at most 20 years from filing, so its term ended December 27, 2013.
  • 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 June 27, 2019.
  • 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.
FiledDecember 27, 1993
PublishedOctober 25, 1995
GrantedAugust 28, 1996
Term endedDecember 27, 2013
Application numberEP 94904187
Classification (CPC)C11D17/0034 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedDec 27, 1993PublishedOct 25, 1995Patent grantedAug 28, 1996Term endedDec 27, 2013

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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