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Expired European patentEurope

Systems and methods for determining spectra using dynamic least squares algorithms with measurements from LED color sensor

EP 1867968 B1 · Applicant: Xerox 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 August 30, 2002 and granted March 23, 2011. A European patent lasts at most 20 years from filing, so its term ended August 30, 2022.
  • 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.
FiledAugust 30, 2002
PublishedDecember 19, 2007
GrantedMarch 23, 2011
Term endedAugust 30, 2022
Application numberEP 07018980
Classification (CPC)G01J3/28 +2 more

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedAug 30, 2002PublishedDec 19, 2007Patent grantedMarch 23, 2011Term endedAug 30, 2022

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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