Patent Yard Sign in
Expired European patentEurope

High hardness/high compressive stress multilayer coated tool

EP 0471005 B1 · Applicant: KENNAMETAL INC.

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 April 12, 1990 and granted June 28, 1995. A European patent lasts at most 20 years from filing, so its term ended April 12, 2010.
  • 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 12, 2015.
  • 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 12, 1990
PublishedFebruary 19, 1992
GrantedJune 28, 1995
Term endedApril 12, 2010
Application numberEP 90907655
Classification (CPC)C23C30/005 +2 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedApril 12, 1990PublishedFeb 19, 1992Patent grantedJune 28, 1995Term endedApril 12, 2010

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.