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Expired European patentEurope

Method for reclaiming useful oil products from waste oil including hydrogen injection

EP 1034237 B1 · Applicant: PATENT HOLDINGS LTD.

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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 23, 1998 and granted July 14, 2004. A European patent lasts at most 20 years from filing, so its term ended October 23, 2018.
  • 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 23, 2024.
  • 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 23, 1998
PublishedSeptember 13, 2000
GrantedJuly 14, 2004
Term endedOctober 23, 2018
Application numberEP 98949835
Classification (CPC)B01D1/0082 +2 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedOct 23, 1998PublishedSep 13, 2000Patent grantedJuly 14, 2004Term endedOct 23, 2018

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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