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Expired European patentEurope

Use of organosilicate resins as hardmasks for organic polymer dielectrics in fabrication of microelectronic devices

EP 1837902 B1 · Applicant: Dow Global Technologies LLC

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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 20, 2001 and granted May 24, 2017. A European patent lasts at most 20 years from filing, so its term ended August 20, 2021.
  • 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 20, 2001
PublishedSeptember 26, 2007
GrantedMay 24, 2017
Term endedAugust 20, 2021
Application numberEP 07107063
Classification (CPC)H10W20/425 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedAug 20, 2001PublishedSep 26, 2007Patent grantedMay 24, 2017Term endedAug 20, 2021

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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