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Expired European patentEurope

Method for prevention of fouling in basic solution by inhibiting polymerization and solubilizing deposits using lactams or amino acids

EP 1501910 B1 · Applicant: Dorf Ketal Chemicals (I) PVT 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 April 16, 2003 and granted July 30, 2008. A European patent lasts at most 20 years from filing, so its term ended April 16, 2023.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 16, 2003
PublishedFebruary 2, 2005
GrantedJuly 30, 2008
Term endedApril 16, 2023
Application numberEP 03715228
Classification (CPC)C10G75/04 +2 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedApril 16, 2003PublishedFeb 2, 2005Patent grantedJuly 30, 2008Term endedApril 16, 2023

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

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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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