The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2024
Filed:
May. 12, 2020
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Materials Co., Ltd., Kanagawa, JP;
Kayo Nakano, Yokohama, JP;
Akira Sato, Yokohama, JP;
Yasuhiro Shirakawa, Yokohama, JP;
Keiichi Fuse, Yokohama, JP;
Shinya Kasamatsu, Yokohama, JP;
Akito Sasaki, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA MATERIALS CO., LTD., Yokohama, JP;
Abstract
In one embodiment, an antibacterial material includes at least one microparticles selected from tungsten oxide microparticles and tungsten oxide complex microparticles. The microparticles, which have undergone a test to evaluate viable cell count by inoculating in a test piece, to which the microparticles are adhered in a range of 0.02 mg/cmor more and 40 mg/cmor less, at least one bacterium selected from among, methicillin-resistant, and enterohemorrhagic, and storing for 24 hours, have an antibacterial activity value R of 0.1 or more expressed by the following: R=log(B/C) where, Bdenotes an average value (number) of viable cell count after storing an untreated test piece for 24 hours, and Cdenotes an average value (number) of viable cell count after storing the test piece on which the microparticles are coated for 24 hours.