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Expired European patentEurope

Compact two-by-n optical components based on birefringent walk-off crystals

EP 1021744 B1 · Applicant: Agilent Technologies, Inc. (a Delaware corporation)

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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 October 14, 1997 and granted January 30, 2002. A European patent lasts at most 20 years from filing, so its term ended October 14, 2017.
  • 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 April 14, 2023.
  • 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.
FiledOctober 14, 1997
PublishedJuly 26, 2000
GrantedJanuary 30, 2002
Term endedOctober 14, 2017
Application numberEP 97913705
Classification (CPC)G02B27/283 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedOct 14, 1997PublishedJuly 26, 2000Patent grantedJan 30, 2002Term endedOct 14, 2017

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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