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Expired European patentEurope

Output buffer circuits

EP 0303341 B1 · Applicant: ADVANCED MICRO DEVICES, INC.

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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 June 15, 1988 and granted August 18, 1993. A European patent lasts at most 20 years from filing, so its term ended June 15, 2008.
  • 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 December 15, 2013.
  • 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.
FiledJune 15, 1988
PublishedFebruary 15, 1989
GrantedAugust 18, 1993
Term endedJune 15, 2008
Application numberEP 88305438
Classification (CPC)H03K19/00361

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJune 15, 1988PublishedFeb 15, 1989Patent grantedAug 18, 1993Term endedJune 15, 2008

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.