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Expired European patentEurope

Variable-surface mirror in an adaptive optical system

EP 0242844 B1 · Applicant: LASERDOT

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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 April 21, 1987 and granted June 19, 1991. A European patent lasts at most 20 years from filing, so its term ended April 21, 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 October 21, 2012.
  • 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.
FiledApril 21, 1987
PublishedOctober 28, 1987
GrantedJune 19, 1991
Term endedApril 21, 2007
Application numberEP 87105825
Classification (CPC)G02B26/06

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedApril 21, 1987PublishedOct 28, 1987Patent grantedJune 19, 1991Term endedApril 21, 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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