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Expired European patentEurope

Process and device for continuous measurement of porosity

EP 0243427 B1 · Applicant: Gessner & Co. GmbH

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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 22, 1986 and granted May 30, 1990. A European patent lasts at most 20 years from filing, so its term ended October 22, 2006.
  • 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 22, 2012.
  • 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 22, 1986
PublishedNovember 4, 1987
GrantedMay 30, 1990
Term endedOctober 22, 2006
Application numberEP 86906316
Classification (CPC)G01N15/0826

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedOct 22, 1986PublishedNov 4, 1987Patent grantedMay 30, 1990Term endedOct 22, 2006

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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