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Expired European patentEurope

Air lock for an enclosure, in particular for a glove-box

EP 0076423 B1 · Applicant: ALKEM GMBH

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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 September 20, 1982 and granted May 2, 1985. A European patent lasts at most 20 years from filing, so its term ended September 20, 2002.
  • 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 March 20, 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.
FiledSeptember 20, 1982
PublishedApril 13, 1983
GrantedMay 2, 1985
Term endedSeptember 20, 2002
Application numberEP 82108679
Classification (CPC)G21F7/047

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedSep 20, 1982PublishedApril 13, 1983Patent grantedMay 2, 1985Term endedSep 20, 2002

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.