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Expired European patentEurope

Viscous fluid type heat generator with an elongated rotor element

EP 0771682 B1 · Applicant: Kabushiki Kaisha Toyota Jidoshokki

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Overview

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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 October 31, 1996 and granted May 21, 2003. A European patent lasts at most 20 years from filing, so its term ended October 31, 2016.
  • 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 May 1, 2022.
  • 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 31, 1996
PublishedMay 7, 1997
GrantedMay 21, 2003
Term endedOctober 31, 2016
Application numberEP 96117469
Classification (CPC)F24V40/00

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedOct 31, 1996PublishedMay 7, 1997Patent grantedMay 21, 2003Term endedOct 31, 2016

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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