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Expired European patentEurope

Plate brick cartridge for slide valve device and slide valve device using the cartridge

EP 0577834 B1 · Applicant: SHINAGAWA REFRACTORIES CO., LTD.

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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 March 23, 1992 and granted May 19, 1999. A European patent lasts at most 20 years from filing, so its term ended March 23, 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 September 23, 2017.
  • 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.
FiledMarch 23, 1992
PublishedJanuary 12, 1994
GrantedMay 19, 1999
Term endedMarch 23, 2012
Application numberEP 92906926
Classification (CPC)B22D41/34

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedMarch 23, 1992PublishedJan 12, 1994Patent grantedMay 19, 1999Term endedMarch 23, 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

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