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Expired European patentEurope

Device for measuring refractive properties of spectacle lenses

EP 0282515 B1 · Applicant: G. RODENSTOCK INSTRUMENTE GMBH

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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 30, 1987 and granted December 4, 1991. A European patent lasts at most 20 years from filing, so its term ended August 30, 2007.
  • 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 2, 2013.
  • 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 30, 1987
PublishedSeptember 21, 1988
GrantedDecember 4, 1991
Term endedAugust 30, 2007
Application numberEP 87905588
Classification (CPC)G01M11/0228

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedAug 30, 1987PublishedSep 21, 1988Patent grantedDec 4, 1991Term endedAug 30, 2007

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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