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:
Jan. 18, 2005
Filed:
Jul. 03, 2000
Takuro Ishibashi, Nagasaki, JP;
Emi Higashiizumi, Ibaraki, JP;
Ryuji Sotoaka, Ibaraki, JP;
Fukusaburo Ishihara, Ibaraki, JP;
Minoru Kakuda, Ibaraki, JP;
Masumi Ogasawara, Ibaraki, JP;
Kouzo Ishibashi, Nagasaki, JP;
Takuro Ishibashi, Nagasaki, JP;
Emi Higashiizumi, Ibaraki, JP;
Ryuji Sotoaka, Ibaraki, JP;
Fukusaburo Ishihara, Ibaraki, JP;
Minoru Kakuda, Ibaraki, JP;
Masumi Ogasawara, Ibaraki, JP;
Kouzo Ishibashi, Nagasaki, JP;
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Abstract
The bleaching compositions of discolored teeth comprise titanium dioxide initiating photocatalyst action with light irradiation, chemical compounds generating hydrogen peroxide in an aqueous solution and thickening agents. Further the bleaching methods of discolored teeth comprising applying the bleaching composition onto the surface area of the teeth and then initiating photocatalyst action by irradiating the applied surfaces area with light. Therefore, the present invention shows remarkable bleaching results due to easy application of the compositions onto discolored teeth and keeping the original activity of the photocatalyst without its deterioration.