Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cipan Comp Ind Produtora De AnfiledCriticalCipan Comp Ind Produtora De An
Priority to PT10199297ApriorityCriticalpatent/PT101992A/pt
Publication of PT101992ApublicationCriticalpatent/PT101992A/pt
Production of zirconia from waste process solutions by carbonate method and zirconia purification[[Previously Titled: Zirconia production-from waste process solutions by carbonate method and zirconium refinement.]]
Legal Events
Date
Code
Title
Description
BB1A
Laying open of patent application
Effective date:
19970717
MM3A
Annulment or lapse
Free format text:
LAPSE DUE TO NON-PAYMENT OF FEES