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Expired European patentEurope

Conveyor channel for the transport of powder or fine, dry bulk material, and method of using the same

EP 0189005 B1 · Applicant: SCHWEIZERISCHE ALUMINIUM AG

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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 December 23, 1985 and granted October 12, 1988. A European patent lasts at most 20 years from filing, so its term ended December 23, 2005.
  • 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 June 23, 2011.
  • 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.
FiledDecember 23, 1985
PublishedJuly 30, 1986
GrantedOctober 12, 1988
Term endedDecember 23, 2005
Application numberEP 85810614
Classification (CPC)B65G53/20

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedDec 23, 1985PublishedJuly 30, 1986Patent grantedOct 12, 1988Term endedDec 23, 2005

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.