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Expired European patentEurope

Acidic limescale removal compositions

EP 0875554 B1 · Applicant: THE PROCTER & GAMBLE 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 April 30, 1997 and granted June 11, 2003. A European patent lasts at most 20 years from filing, so its term ended April 30, 2017.
  • 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 October 30, 2022.
  • 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 30, 1997
PublishedNovember 4, 1998
GrantedJune 11, 2003
Term endedApril 30, 2017
Application numberEP 97870056
Classification (CPC)C11D1/94 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedApril 30, 1997PublishedNov 4, 1998Patent grantedJune 11, 2003Term endedApril 30, 2017

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.