Patent Yard Sign in
Expired European patentEurope

Process for producing 3-methyltetrahydrofuran

EP 0832885 B1 · Applicant: MITSUBISHI GAS CHEMICAL COMPANY, 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 September 16, 1997 and granted July 3, 2002. A European patent lasts at most 20 years from filing, so its term ended September 16, 2017.
  • 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 March 16, 2023.
  • 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.
FiledSeptember 16, 1997
PublishedApril 1, 1998
GrantedJuly 3, 2002
Term endedSeptember 16, 2017
Application numberEP 97116046
Classification (CPC)C07D307/06

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedSep 16, 1997PublishedApril 1, 1998Patent grantedJuly 3, 2002Term endedSep 16, 2017

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.