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European application, no grantEurope

Composition and method for cleaning gas turbine compressors

EP 0275987 A2 · Applicant: THE DOW CHEMICAL COMPANY

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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 January 20, 1988 and never granted as a European patent. Had it been granted, its 20-year term would have ended January 20, 2008.
  • 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 July 20, 2013.
  • 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.
FiledJanuary 20, 1988
PublishedJuly 27, 1988
GrantedNever granted
Term endedJanuary 20, 2008
Application numberEP 88100756
Classification (CPC)C11D1/835 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJan 20, 1988PublishedJuly 27, 1988Term endedJan 20, 2008

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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