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Expired European patentEurope

Device for measuring aerosols and airborne dust

EP 0402633 B1 · Applicant: Erwin Sick GmbH Optik-Elektronik

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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 11, 1990 and granted December 15, 1993. A European patent lasts at most 20 years from filing, so its term ended May 11, 2010.
  • 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 11, 2015.
  • 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 11, 1990
PublishedDecember 19, 1990
GrantedDecember 15, 1993
Term endedMay 11, 2010
Application numberEP 90108950
Classification (CPC)G01N21/53

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedMay 11, 1990PublishedDec 19, 1990Patent grantedDec 15, 1993Term endedMay 11, 2010

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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