Patent Yard Sign in
Expired European patentEurope

Cement clinker, cement composition, method for producing cement clinker and method for treatment of waste containing alkali component

EP 1184352 B1 · Applicant: SUMITOMO OSAKA CEMENT CO., LTD.

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed February 7, 2001 and granted January 24, 2007. A European patent lasts at most 20 years from filing, so its term ended February 7, 2021.
  • 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 7, 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.
FiledFebruary 7, 2001
PublishedMarch 6, 2002
GrantedJanuary 24, 2007
Term endedFebruary 7, 2021
Application numberEP 01904330
Classification (CPC)C04B7/24 +2 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedFeb 7, 2001PublishedMarch 6, 2002Patent grantedJan 24, 2007Term endedFeb 7, 2021

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.