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Expired European patentEurope

Method and apparatus for the investigation of the structure and permeability of soil and rock formations

EP 0105967 B1 · Applicant: KOHLENSÄURE-WERKE RUD. BUSE GMBH & CO.

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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 October 19, 1982 and granted June 11, 1986. A European patent lasts at most 20 years from filing, so its term ended October 19, 2002.
  • 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 April 19, 2008.
  • 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.
FiledOctober 19, 1982
PublishedApril 25, 1984
GrantedJune 11, 1986
Term endedOctober 19, 2002
Application numberEP 82109653
Classification (CPC)E02D1/08 +1 more

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedOct 19, 1982PublishedApril 25, 1984Patent grantedJune 11, 1986Term endedOct 19, 2002

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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