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Expired European patentEurope

Surface tension reduction with n,n,n'-trialkyl ureas

EP 1094095 B1 · Applicant: AIR PRODUCTS AND CHEMICALS, INC.

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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 11, 2000 and granted July 28, 2004. A European patent lasts at most 20 years from filing, so its term ended October 11, 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 April 11, 2026.
  • 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 11, 2000
PublishedApril 25, 2001
GrantedJuly 28, 2004
Term endedOctober 11, 2020
Application numberEP 00122080
Classification (CPC)C09D11/03 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedOct 11, 2000PublishedApril 25, 2001Patent grantedJuly 28, 2004Term endedOct 11, 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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