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European application, no grantEurope

Improvements in hydraulic cements

EP 0056700 A2 · Applicant: International Standard Electric Corporation

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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.

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Why it's free to use

  • Filed January 12, 1982 and never granted as a European patent. Had it been granted, its 20-year term would have ended January 12, 2002.
  • 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 12, 2007.
  • 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 12, 1982
PublishedJuly 28, 1982
GrantedNever granted
Term endedJanuary 12, 2002
Application numberEP 82300141
Classification (CPC)C04B22/00 +1 more

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedJan 12, 1982PublishedJuly 28, 1982Term endedJan 12, 2002

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.