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Expired Australian patentAustralia

In-situ activation of CuO/ZnO/AlO catalysts in the liquid phase

AU 1988025875 · Applicant: Air Products And Chemicals Inc

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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 November 25, 1988 and granted December 21, 1989. 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 November 25, 2009.
  • A pharmaceutical extension adds at most five years, so even that would have ended by November 25, 2014.
  • We check Australian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 25, 1988
GrantedDecember 21, 1989
Term ended byNovember 25, 2009
Application numberAU 1988025875
Classification (IPC)B01J37/18 +2 more

Timeline

Timeline From IP Australia dates

1989199219951998200120042007Application filedNov 25, 1988Patent grantedDec 21, 1989Term ended byNov 25, 2009

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.