Patents by Inventor Jin-Kai Chang

Jin-Kai Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160139300
    Abstract: A method for producing a low temperature glass phosphor lens includes dry mixing a glass material and fluorescent powder to form a powdery or particulate mixture. The mixture is grinded to a diameter of 15-20 ?m, obtaining uniformly mixed glass fluorescent powder. The glass fluorescent powder is hot pressed into a glass phosphor at a temperature of 500-1000° C. The glass phosphor is grinded and polished into a lens. The fluorescent powder can be a fluorescent material selected from the group consisting of yttrium aluminum garnet, nitride, and silicate. The glass material can be selected from the group consisting of a silicate system, a phosphor system, a borate system, and a tellurate system. The glass phosphor includes characteristics of both of glass and fluorescence. The glass phosphor can keep efficiency under the high heat generated by the chip of an LED.
    Type: Application
    Filed: November 14, 2014
    Publication date: May 19, 2016
    Inventors: Wood-Hi Cheng, Yung-Peng Chang, Li-Yin Chen, Chun-Chin Tsai, Yi-Chung Huang, Wei-Chih Cheng, Jin-Kai Chang