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Expired European patentEurope

Method and apparatus for measuring flow by using phase advance

EP 0537735 B1 · Applicant: ORE 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 October 15, 1992 and granted July 30, 2003. A European patent lasts at most 20 years from filing, so its term ended October 15, 2012.
  • 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 April 15, 2018.
  • 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.
FiledOctober 15, 1992
PublishedApril 21, 1993
GrantedJuly 30, 2003
Term endedOctober 15, 2012
Application numberEP 92117619
Classification (CPC)G01F1/662 +1 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedOct 15, 1992PublishedApril 21, 1993Patent grantedJuly 30, 2003Term endedOct 15, 2012

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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