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European application, no grantEurope

Carbon-cleaning apparatus for diesel engines

EP 0397752 A1 · Applicant: PARKER AUTOMOTIVE CORPORATION

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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 14, 1988 and never granted as a European patent. Had it been granted, its 20-year term would have ended October 14, 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 April 14, 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.
FiledOctober 14, 1988
PublishedNovember 22, 1990
GrantedNever granted
Term endedOctober 14, 2008
Application numberEP 89901971
Classification (CPC)F02M65/007 +1 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedOct 14, 1988PublishedNov 22, 1990Term endedOct 14, 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.