Patent Yard Sign in
Expired European patentEurope

A material with a low volume resistivity, aluminium nitride sintered body and article for manufacturing semiconductors

EP 1201622 B1 · Applicant: NGK INSULATORS, 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 October 23, 2001 and granted December 13, 2006. A European patent lasts at most 20 years from filing, so its term ended October 23, 2021.
  • 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.
FiledOctober 23, 2001
PublishedMay 2, 2002
GrantedDecember 13, 2006
Term endedOctober 23, 2021
Application numberEP 01308980
Classification (CPC)C04B35/581 +1 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedOct 23, 2001PublishedMay 2, 2002Patent grantedDec 13, 2006Term endedOct 23, 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.