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Expired European patentEurope

Use of magnesiumphosphate for softening water

EP 1848667 B1 · Applicant: WP Engineering Limited

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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 11, 2006 and granted April 7, 2010. A European patent lasts at most 20 years from filing, so its term ended February 11, 2026.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 11, 2006
PublishedOctober 31, 2007
GrantedApril 7, 2010
Term endedFebruary 11, 2026
Application numberEP 06706877
Classification (CPC)C02F5/04 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedFeb 11, 2006PublishedOct 31, 2007Patent grantedApril 7, 2010Term endedFeb 11, 2026

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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