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:
Oct. 30, 2012
Filed:
Jul. 19, 2011
Applicants:
Jiguang LI, Tsukuba, JP;
Takamasa Ishigaki, Tsukuba, JP;
Inventors:
Jiguang Li, Tsukuba, JP;
Takamasa Ishigaki, Tsukuba, JP;
Assignee:
National Institute for Materials Science, Tsukuba-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Titanium dioxide particles is doped with a rare earth element. The doping ratio of the rare earth element is within a range more than 0 at % and not more than 5.0 at %, and the rare earth element is substituted for titanium atoms in the unit lattice of titanium dioxide so that the titanium dioxide particles emit light attributable to the rare earth element when the titanium dioxide particles are irradiated with light having the absorption wavelength of titanium dioxide and showing a peak at 360 nm.