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Expired European patentEurope

Flow meter within caustic fluids having non-contaminating body

EP 0880686 B1 · Applicant: NT INTERNATIONAL, INC.

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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 22, 1997 and granted April 10, 2002. A European patent lasts at most 20 years from filing, so its term ended January 22, 2017.
  • 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 July 22, 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.
FiledJanuary 22, 1997
PublishedDecember 2, 1998
GrantedApril 10, 2002
Term endedJanuary 22, 2017
Application numberEP 97904828
Classification (CPC)G01F1/363 +1 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedJan 22, 1997PublishedDec 2, 1998Patent grantedApril 10, 2002Term endedJan 22, 2017

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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