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Expired European patentEurope

Method of improving performance of refrigerant systems

EP 1198535 B1 · Applicant: Cognis IP Management GmbH

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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 June 8, 2000 and granted July 27, 2011. A European patent lasts at most 20 years from filing, so its term ended June 8, 2020.
  • 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 December 8, 2025.
  • 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.
FiledJune 8, 2000
PublishedApril 24, 2002
GrantedJuly 27, 2011
Term endedJune 8, 2020
Application numberEP 00938224
Classification (CPC)C10M171/008 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedJune 8, 2000PublishedApril 24, 2002Patent grantedJuly 27, 2011Term endedJune 8, 2020

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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