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Expired European patentEurope

Process for the nuclear chlorination of toluene

EP 0063384 B1 · Applicant: HODOGAYA CHEMICAL CO., LTD.

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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 April 20, 1982 and granted December 19, 1984. A European patent lasts at most 20 years from filing, so its term ended April 20, 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 October 20, 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.
FiledApril 20, 1982
PublishedOctober 27, 1982
GrantedDecember 19, 1984
Term endedApril 20, 2002
Application numberEP 82103317
Classification (CPC)C07C17/12

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedApril 20, 1982PublishedOct 27, 1982Patent grantedDec 19, 1984Term endedApril 20, 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

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