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Expired European patentEurope

Method for plasma treatment of resin material

EP 0461683 B1 · Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

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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 23, 1984 and granted September 23, 1998. A European patent lasts at most 20 years from filing, so its term ended February 23, 2004.
  • 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 23, 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.
FiledFebruary 23, 1984
PublishedDecember 18, 1991
GrantedSeptember 23, 1998
Term endedFebruary 23, 2004
Application numberEP 91115536
Classification (CPC)H01J37/18 +2 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedFeb 23, 1984PublishedDec 18, 1991Patent grantedSep 23, 1998Term endedFeb 23, 2004

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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