Patent ID: 11896966
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Chemical engineering (Chemistry)
Classification: CPC B  A  C | IPC A  B  C

Claim 3:
4. The method according to claim 1, wherein
the tungsten oxide complex microparticles have an antibacterial activity value RL of 1.0 or more expressed by the following:

RL=log(BL/CL),

where BL denotes an average value of viable cell count after storing an untreated test piece under the visible light having a wavelength of 380 nm and an illuminance of 6000 lx for 24 hours, and CL denotes an average value of viable cell count after storing the test piece on which the tungsten oxide complex microparticles are coated under the visible light having wavelength of 380 nm and illuminance of 6000 lx for 24 hours, as determined by an antibacterial property evaluation test using a white fluorescent lamp and an UV cut filter.