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Expired European patentEurope

Method for increasing the capacity of sewage treatment plant

EP 0706500 B1 · Applicant: LIQUID CARBONIC CORPORATION

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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 June 21, 1994 and granted May 10, 2000. A European patent lasts at most 20 years from filing, so its term ended June 21, 2014.
  • 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 December 21, 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.
FiledJune 21, 1994
PublishedApril 17, 1996
GrantedMay 10, 2000
Term endedJune 21, 2014
Application numberEP 94921993
Classification (CPC)C02F3/26

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedJune 21, 1994PublishedApril 17, 1996Patent grantedMay 10, 2000Term endedJune 21, 2014

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.