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Expired European patentEurope

A method of operating an internal combustion engine with an air compressor driven thereby

EP 0095457 B1 · Applicant: ANDERBERG, Ake Elvir (Deceased) Legally represented by ABELIN, Rudolf K.

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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 July 9, 1981 and granted September 30, 1987. A European patent lasts at most 20 years from filing, so its term ended July 9, 2001.
  • 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 January 9, 2007.
  • 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.
FiledJuly 9, 1981
PublishedDecember 7, 1983
GrantedSeptember 30, 1987
Term endedJuly 9, 2001
Application numberEP 81901922
Classification (CPC)F02G3/00 +1 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedJuly 9, 1981PublishedDec 7, 1983Patent grantedSep 30, 1987Term endedJuly 9, 2001

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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