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:
Sep. 09, 2008
Filed:
Apr. 15, 2003
Guangshun Yi, Beijing, CN;
Baoquan Sun, Shangdong Province, CN;
Depu Chen, Beijing, CN;
Yuxiang Zhou, Beijing, CN;
Jing Cheng, Beijing, CN;
Wenjun Yang, Beijing, CN;
Yue GE, Beijing, CN;
Lianghong Guo, Beijing, CN;
Guangshun Yi, Beijing, CN;
Baoquan Sun, Shangdong Province, CN;
Depu Chen, Beijing, CN;
Yuxiang Zhou, Beijing, CN;
Jing Cheng, Beijing, CN;
Wenjun Yang, Beijing, CN;
Yue Ge, Beijing, CN;
Lianghong Guo, Beijing, CN;
Capital Biochip Company Ltd, Beijing, CN;
Abstract
Nanometer-scaled up-converting fluoride phosphor particles and processes of making them are disclosed. In the process, an aqueous solution consisting of soluble salts of rare-earth metal ions at a molar ratio of (yttrium, lanthanum or gadolinium): ytterbium:(erbium, holmium, terbium or thulium)=(70-90):(0-29):(0.001-15) is mixed a rare-earth metal chelator and a soluble fluoride salt to form precipitates, which are then annealed at an elevated temperature to produce nanometer-scaled up-converting fluoride phosphor particles. The particle size is between 35 nm and 200 nm, and can be controlled by the amount of the metal chelator added to the solution. The nanometer-sized particle is applicable to many biological assays.