Patent Yard Sign in
Expired European patentEurope

Method and apparatus for preparing multi-cellular foamed board of thermoplastic resin

EP 0117641 B1 · Applicant: SEKISUI KASEIHIN KOGYO KABUSHIKI KAISHA

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 January 27, 1984 and granted September 23, 1987. A European patent lasts at most 20 years from filing, so its term ended January 27, 2004.
  • 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 27, 2009.
  • 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 27, 1984
PublishedSeptember 5, 1984
GrantedSeptember 23, 1987
Term endedJanuary 27, 2004
Application numberEP 84300530
Classification (CPC)B29C44/26 +1 more

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedJan 27, 1984PublishedSep 5, 1984Patent grantedSep 23, 1987Term endedJan 27, 2004

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.