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Expired European patentEurope

Sand classification plant with process control system

EP 0095293 B1 · Applicant: HINESBURG SAND AND GRAVEL COMPANY

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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 May 16, 1983 and granted September 13, 1989. A European patent lasts at most 20 years from filing, so its term ended May 16, 2003.
  • 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 November 16, 2008.
  • 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.
FiledMay 16, 1983
PublishedNovember 30, 1983
GrantedSeptember 13, 1989
Term endedMay 16, 2003
Application numberEP 83302739
Classification (CPC)B03B9/00 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedMay 16, 1983PublishedNov 30, 1983Patent grantedSep 13, 1989Term endedMay 16, 2003

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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