(source: https://www.rsc.org/periodic-table/element/111/roentgenium)

Roentgenium is described as one of the possible d-block metals constituting a correlated electron material (CEM), which is incorporated in an electron switch (CES) for used in  memory devices: Memory Devices Formed From Correlated Electron Materials (2018).

Nanoplatelets consisting of metal oxides and/or hydroxides are suggested as fire retardants and as agents for chemical or biological decontamination. 

Roentgenium oxide and/or hydroxide are mentioned as being suitable: Nanoplatelet Metal Oxides (2017).


All patent information has been obtained from Espacenet (European Patent Office).