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Expired Australian patentAustralia

Mixture of organosilanepolysulphanes and a process for the production of rubber compounds containing these mixtures

AU 1997028721 · Applicant: Evonik Degussa Gmbh

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Listed from its IP Australia record in Patent Yard's archive of Australian patents past their term. Its claims, description and drawings are in the AusPat record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed July 17, 1997 and granted December 21, 2000. An Australian standard patent lasts 20 years from its date of patent, which is at most a year after this filing, so its term ended by July 17, 2018.
  • A pharmaceutical extension adds at most five years, so even that would have ended by July 17, 2023.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 17, 1997
GrantedDecember 21, 2000
Term ended byJuly 17, 2018
Application numberAU 1997028721
Classification (IPC)C08K5/548 +2 more

Timeline

Timeline From IP Australia dates

1998200120042007201020132016Application filedJuly 17, 1997Patent grantedDec 21, 2000Term ended byJuly 17, 2018

Sources & verification

Everything on this page comes from the IP Australia record linked above. Data from IP Australia's IPGOD, licensed under CC BY 2.5 AU.