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Expired European patentEurope

Regulating device for screw-type compressors

EP 0629778 B1 · Applicant: ATLAS COPCO AIRPOWER N.V.

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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 March 29, 1994 and granted January 7, 1998. A European patent lasts at most 20 years from filing, so its term ended March 29, 2014.
  • 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 September 29, 2019.
  • 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.
FiledMarch 29, 1994
PublishedDecember 21, 1994
GrantedJanuary 7, 1998
Term endedMarch 29, 2014
Application numberEP 94200860
Classification (CPC)F04C28/08 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMarch 29, 1994PublishedDec 21, 1994Patent grantedJan 7, 1998Term endedMarch 29, 2014

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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