Patents Assigned to RIPD Intellectual Assets Ltd
  • Zinc oxide varistor ceramics
    Patent number: 11501900
    Abstract: Provided according to embodiments of the invention are varistor ceramic formulations that include zinc oxide (ZnO). In particular, varistor ceramic formulations of the invention may include dopants including an alkali metal compound, an alkaline earth compound, an oxide of boron, an oxide of aluminum, or a combination thereof. Varistor ceramic formulations may also include other metal oxides. Also provided according to embodiments of the invention are varistor ceramic materials formed by sintering a varistor ceramic formulation according to an embodiment of the invention. Further provided are varistors formed from such ceramic materials and methods of making such materials.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: November 15, 2022
    Assignee: RIPD Intellectual Assets Ltd.
    Inventors: Mirjam Cergolj, Sa{hacek over (s)}a Rustja Kosec, Sodec Jo{hacek over (z)}ef, Andrej Pirih
  • Zinc oxide varistor ceramics
    Patent number: 11170917
    Abstract: Provided according to embodiments of the invention are varistor ceramic formulations that include zinc oxide (ZnO). In particular, varistor ceramic formulations of the invention may include dopants including an alkali metal compound, an alkaline earth compound, an oxide of boron, an oxide of aluminum, or a combination thereof. Varistor ceramic formulations may also include other metal oxides. Also provided according to embodiments of the invention are varistor ceramic materials formed by sintering a varistor ceramic formulation according to an embodiment of the invention. Further provided are varistors formed from such ceramic materials and methods of making such materials.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: November 9, 2021
    Assignee: RIPD Intellectual Assets Ltd
    Inventors: Mirjam Cergolj, Sa{hacek over (s)}a Rustja Kosec, Sodec Jo{hacek over (z)}ef, Andrej Pirih