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Excimer laser ablation method and apparatus for microcircuit device fabrication

EP 0443023 A1 · Applicant: HUGHES AIRCRAFT COMPANY

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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 August 29, 1990 and never granted as a European patent. Had it been granted, its 20-year term would have ended August 29, 2010.
  • 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 February 29, 2016.
  • 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 29, 1990
PublishedAugust 28, 1991
GrantedNever granted
Term endedAugust 29, 2010
Application numberEP 90915129
Classification (CPC)H10P34/42 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedAug 29, 1990PublishedAug 28, 1991Term endedAug 29, 2010

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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