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Expired European patentEurope

Low temperature cofired ceramic packages for microwave and millimeter wave gallium arsenide integrated circuits

EP 0401341 B1 · 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 November 13, 1989 and granted November 3, 1993. A European patent lasts at most 20 years from filing, so its term ended November 13, 2009.
  • 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 May 13, 2015.
  • 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.
FiledNovember 13, 1989
PublishedDecember 12, 1990
GrantedNovember 3, 1993
Term endedNovember 13, 2009
Application numberEP 90900581
Classification (CPC)H01P3/08 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedNov 13, 1989PublishedDec 12, 1990Patent grantedNov 3, 1993Term endedNov 13, 2009

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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