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Expired European patentEurope

Means and method for controlling input events in multi-processing computer systems

EP 0304891 B1 · Applicant: WANG LABORATORIES INC.

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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 24, 1988 and granted May 10, 1995. A European patent lasts at most 20 years from filing, so its term ended August 24, 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 February 24, 2014.
  • 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 24, 1988
PublishedMarch 1, 1989
GrantedMay 10, 1995
Term endedAugust 24, 2008
Application numberEP 88113791
Classification (CPC)G06F3/023 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedAug 24, 1988PublishedMarch 1, 1989Patent grantedMay 10, 1995Term endedAug 24, 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

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