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Expired European patentEurope

Hydrocarbon stream antifoulant method

EP 0877072 B1 · Applicant: The Lubrizol Corporation

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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 April 28, 1998 and granted June 25, 2003. A European patent lasts at most 20 years from filing, so its term ended April 28, 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 October 28, 2023.
  • 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.
FiledApril 28, 1998
PublishedNovember 11, 1998
GrantedJune 25, 2003
Term endedApril 28, 2018
Application numberEP 98303287
Classification (CPC)C10G75/04 +1 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedApril 28, 1998PublishedNov 11, 1998Patent grantedJune 25, 2003Term endedApril 28, 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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