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Expired European patentEurope

Process for reducing nitrogen oxides from exhaust gas

EP 0555889 B1 · Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

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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 30, 1990 and granted February 28, 1996. A European patent lasts at most 20 years from filing, so its term ended August 30, 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 March 1, 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 30, 1990
PublishedAugust 18, 1993
GrantedFebruary 28, 1996
Term endedAugust 30, 2010
Application numberEP 93105778
Classification (CPC)B01J29/072 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedAug 30, 1990PublishedAug 18, 1993Patent grantedFeb 28, 1996Term endedAug 30, 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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