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Expired European patentEurope

Installation element for an apparatus for mass transfer, direct heat exchange and mixing

EP 0072875 B1 · Applicant: GEBRÜDER SULZER AKTIENGESELLSCHAFT

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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 August 26, 1981 and granted December 4, 1985. A European patent lasts at most 20 years from filing, so its term ended August 26, 2001.
  • 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 February 26, 2007.
  • 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.
FiledAugust 26, 1981
PublishedMarch 2, 1983
GrantedDecember 4, 1985
Term endedAugust 26, 2001
Application numberEP 81106615
Classification (CPC)B01J19/32 +2 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedAug 26, 1981PublishedMarch 2, 1983Patent grantedDec 4, 1985Term endedAug 26, 2001

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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