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Colored Translucent Zirconia Sintered Body And Powder, And Use Thereof

Patent No. EP3159323 (titled "Colored Translucent Zirconia Sintered Body And Powder, And Use Thereof") was filed by Tosoh on Jun 22, 2015. The application was issued on Jun 19, 2019.

Patent Summary

Colored translucent zirconia sintered body for dental applications that mimics the aesthetics of natural teeth. The sintered body contains zirconia with specific compositions of yttria, erbia, cobalt, iron, and aluminum. The compositions provide translucency, strength, and stability for dental use without needing porcelain layering. The zirconia powder is molded and sintered under normal pressure. This allows producing translucent zirconia dental parts like front teeth that have natural tooth-like color and transparency. The compositions also prevent color change in the oral environment.

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Patent Oppositions (2)

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
TREIBACHER INDUSTRIEMar 19, 2020SCHWARZ & PARTNER PATENTANWALTE
SOLVENTUM PROPERTIES M HEALTHCARE GERMANYMar 12, 2020BREM

Dossier Documents

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EP3159323

TOSOH
Application Number
EP15812269A
Filing Date
Jun 22, 2015
Status
Granted And Under Opposition
May 17, 2019
Publication Date
Jun 19, 2019
External Links
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