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Expired European patentEurope

Effective cleaning method for turbine airfoils

EP 0759098 B1 · Applicant: UNITED TECHNOLOGIES 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 February 9, 1995 and granted May 6, 1998. A European patent lasts at most 20 years from filing, so its term ended February 9, 2015.
  • 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 August 9, 2020.
  • 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.
FiledFebruary 9, 1995
PublishedFebruary 26, 1997
GrantedMay 6, 1998
Term endedFebruary 9, 2015
Application numberEP 95910210
Classification (CPC)C23G1/14 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedFeb 9, 1995PublishedFeb 26, 1997Patent grantedMay 6, 1998Term endedFeb 9, 2015

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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