(EP946206-A2)      A semiconductor (e.g. titanium dioxide or silicon carbide) material (4) is bound by two surfaces (2, 15) one of which (2) is disinfected from time to time.    The novelty is that:    (a) the surface (2) is disinfected by an ultra-violet (UV) (13, 14) radiation source (6, 8);    (b) the UV (13, 14) radiation source is directed towards the second side (15) of the material which is to be disinfected, and    (c) the UV radiation is directed towards the respective surfaces via a transparent material (3).    USE -   Ultra violet disinfecting is used for, e.g. medical, dental or food preparation surfaces.    ADVANTAGE -   The surface may be more easily disinfected than with, e.g. chemical agents.    (DE19654109-C2)      A semiconductor (e.g. titanium dioxide or silicon carbide) material (4) is bound by two surfaces (2, 15) one of which (2) is disinfected from time to time.    The novelty is that:    (a) the surface (2) is disinfected by an ultra-violet (UV) (13, 14) radiation source (6, 8);    (b) the UV (13, 14) radiation source is directed towards the second side (15) of the material which is to be disinfected, and    (c) the UV radiation is directed towards the respective surfaces via a transparent material (3).    USE -   Ultra violet disinfecting is used for, e.g. medical, dental or food preparation surfaces.    ADVANTAGE -   The surface may be more easily disinfected than with, e.g. chemical agents.    (JP2001506890-W)      A semiconductor (e.g. titanium dioxide or silicon carbide) material (4) is bound by two surfaces (2, 15) one of which (2) is disinfected from time to time.    The novelty is that:    (a) the surface (2) is disinfected by an ultra-violet (UV) (13, 14) radiation source (6, 8);    (b) the UV (13, 14) radiation source is directed towards the second side (15) of the material which is to be disinfected, and    (c) the UV radiation is directed towards the respective surfaces via a transparent material (3).    USE -   Ultra violet disinfecting is used for, e.g. medical, dental or food preparation surfaces.    ADVANTAGE -   The surface may be more easily disinfected than with, e.g. chemical agents.    (US6258736-B1)      A semiconductor (e.g. titanium dioxide or silicon carbide) material (4) is bound by two surfaces (2, 15) one of which (2) is disinfected from time to time.    The novelty is that:    (a) the surface (2) is disinfected by an ultra-violet (UV) (13, 14) radiation source (6, 8);    (b) the UV (13, 14) radiation source is directed towards the second side (15) of the material which is to be disinfected, and    (c) the UV radiation is directed towards the respective surfaces via a transparent material (3).    USE -   Ultra violet disinfecting is used for, e.g. medical, dental or food preparation surfaces.    ADVANTAGE -   The surface may be more easily disinfected than with, e.g. chemical agents.