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Expired European patentEurope

Process for the production of silicon in electric low-shaft furnace and green bricks to carry out the process

EP 0527353 B1 · Applicant: APPLIED INDUSTRIAL MATERIALS CORPORATION AIMCOR

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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 July 17, 1992 and granted June 7, 1995. A European patent lasts at most 20 years from filing, so its term ended July 17, 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 January 17, 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.
FiledJuly 17, 1992
PublishedFebruary 17, 1993
GrantedJune 7, 1995
Term endedJuly 17, 2012
Application numberEP 92112203
Classification (CPC)C01B33/025

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJuly 17, 1992PublishedFeb 17, 1993Patent grantedJune 7, 1995Term endedJuly 17, 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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