Patents by Inventor Chung-Ryoi Jeong

Chung-Ryoi Jeong 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).

  • Polyacetal resin composition stable to chlorine and chlorides and article prepared therefrom
    Publication number: 20050020770
    Abstract: Disclosed is a polyacetal resin composition stable to chlorine and chlorides, which is advantageous in terms of excellent thermal stability and chlorine resistance. The polyacetal resin composition consist of 100 parts by weight of polyoxymethylene or a copolymer thereof; 0.01-1.0 part by weight of an antioxidant; 0.01-1.0 part by weight of thermal stabilizer; 0.01-10.0 parts by weight of metal hydroxide selected from among magnesium hydroxide, calcium hydroxide, barium hydroxide, cadmium hydroxide, aluminum hydroxide and combinations thereof; and 0.01-5.0 parts by weight of metal oxide selected from synthetic aluminum silicate, calcium oxide, magnesium oxide, aluminum oxide and magnesium aluminate. An article prepared from such a polyacetal resin composition is also disclosed.
    Type: Application
    Filed: September 27, 2002
    Publication date: January 27, 2005
    Inventors: Tak-Kyu Kim, Chung-Ryoi Jeong, Ki-Chul Shin