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Expired European patentEurope

Cleaning agent and cleaning process for harmful gas

EP 0764458 B1 · Applicant: JAPAN PIONICS CO., LTD.

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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 July 12, 1996 and granted September 27, 2000. A European patent lasts at most 20 years from filing, so its term ended July 12, 2016.
  • 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 January 12, 2022.
  • 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.
FiledJuly 12, 1996
PublishedMarch 26, 1997
GrantedSeptember 27, 2000
Term endedJuly 12, 2016
Application numberEP 96111258
Classification (CPC)B01D53/68

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedJuly 12, 1996PublishedMarch 26, 1997Patent grantedSep 27, 2000Term endedJuly 12, 2016

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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