Japanese Patent No. 5494954
This patent covers an invention whereby a SERS spot is divided into microregions each of which is optimized for different target molecules and measuring conditions. This would optimize the chance of detecting the widest possible range of molecules simultaneously.
Japanese Patent No. 5967756
This patent makes use of surface-adsorbed monodisperse nanospheres for two purposes of forming a SERS surface and a superhydrophobic surface. Appropriate patterning by noble metal allows us to pre-concentrate a sample prior to SERS measurements.
Japanese Patent No. 6906784
This is in connection with FlexiSERS. Metal nanostructures are formed on adhesive tape. This robust format allows the pressing of a device against a solid surface for the detection of surface-adsorbed target molecules.