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Expired European patentEurope

Aerator for aerobic and anaerobic water treatment

EP 1277706 B1 · Applicant: Hitachi Kiden Kogyo 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 January 10, 2002 and granted March 19, 2008. A European patent lasts at most 20 years from filing, so its term ended January 10, 2022.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledJanuary 10, 2002
PublishedJanuary 22, 2003
GrantedMarch 19, 2008
Term endedJanuary 10, 2022
Application numberEP 02250166
Classification (CPC)C02F3/301 +2 more

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedJan 10, 2002PublishedJan 22, 2003Patent grantedMarch 19, 2008Term endedJan 10, 2022

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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