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Expired Australian patentAustralia

Solution purification method for electrolyte

AU 2000019553 · Applicant: Sumitomo Metal Mining Company Limited

AusPat record

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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 February 29, 2000 and granted October 18, 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 February 28, 2021.
  • A pharmaceutical extension adds at most five years, so even that would have ended by March 1, 2026.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 29, 2000
GrantedOctober 18, 2001
Term ended byFebruary 28, 2021
Application numberAU 2000019553
Classification (IPC)C25C7/06 +2 more

Timeline

Timeline From IP Australia dates

2001200420072010201320162019Application filedFeb 29, 2000Patent grantedOct 18, 2001Term ended byFeb 28, 2021

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.