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Expired Australian patentAustralia

Impedance-to-voltage converter and converting method

AU 1999020742 · Applicant: Tokyo Electron Limited

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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 January 22, 1999 and granted January 25, 2001. 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 January 22, 2020.
  • A pharmaceutical extension adds at most five years, so even that would have ended by January 22, 2025.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 22, 1999
GrantedJanuary 25, 2001
Term ended byJanuary 22, 2020
Application numberAU 1999020742
Classification (IPC)G01R27/26

Timeline

Timeline From IP Australia dates

2000200320062009201220152018Application filedJan 22, 1999Patent grantedJan 25, 2001Term ended byJan 22, 2020

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.