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Expired European patentEurope

Apparatus for controlling polarization of light inputted to polarization-maintaining waveguide components

EP 1728118 B1 · Applicant: FUJITSU LIMITED

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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 March 25, 2004 and granted June 10, 2009. A European patent lasts at most 20 years from filing, so its term ended March 25, 2024.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledMarch 25, 2004
PublishedDecember 6, 2006
GrantedJune 10, 2009
Term endedMarch 25, 2024
Application numberEP 04723310
Classification (CPC)G02F1/0136 +1 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedMarch 25, 2004PublishedDec 6, 2006Patent grantedJune 10, 2009Term endedMarch 25, 2024

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

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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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