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Expired Australian patentAustralia

Solid insulator and method of manufacturing the same

AU 1993049846 · Applicant: Ngk Insulators Ltd

AusPat record

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Its specification, documents and status are on IP Australia's AusPat.

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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 September 21, 1993 and granted April 23, 1996. 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 September 21, 2014.
  • A pharmaceutical extension adds at most five years, so even that would have ended by September 21, 2019.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 21, 1993
GrantedApril 23, 1996
Term ended bySeptember 21, 2014
Application numberAU 1993049846
Classification (IPC)H01B17/14 +2 more

Timeline

Timeline From IP Australia dates

1994199720002003200620092012Application filedSep 21, 1993Patent grantedApril 23, 1996Term ended bySep 21, 2014

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.