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Expired European patentEurope

Method and apparatus for cleaning optical surfaces

EP 0706426 B1 · Applicant: IMAX CORPORATION

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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 June 29, 1994 and granted December 2, 1998. A European patent lasts at most 20 years from filing, so its term ended June 29, 2014.
  • 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 December 29, 2019.
  • 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.
FiledJune 29, 1994
PublishedApril 17, 1996
GrantedDecember 2, 1998
Term endedJune 29, 2014
Application numberEP 94919540
Classification (CPC)—

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedJune 29, 1994PublishedApril 17, 1996Patent grantedDec 2, 1998Term endedJune 29, 2014

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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