Patents by Inventor Kang-Yong Ryoo

Kang-Yong Ryoo 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).

  • Freeze-grinding method of the waste materials using the cooled air
    Patent number: 6923392
    Abstract: In method for freeze-crushing waste resources, freezing gas is first created by collecting freezing heat source of liquefied petroleum gas during a heat exchange process between the liquefied petroleum gas and cooling gas, and then the waste resources stored in a freezing tank is frozen to a temperature where the waste resources can be easily crushed by supplying the freezing gas to the freezing tank. Next, the frozen waste resources is crushed in an crushing apparatus, after which the freezing gas is separated from the crushed waste resources in a separate apparatus and the freezing gas for is collected the purpose of reuse.
    Type: Grant
    Filed: December 24, 2001
    Date of Patent: August 2, 2005
    Assignee: Kolon Construction Co., Ltd.
    Inventors: Soon-Jin Hong, Kwang-Ho Choi, Kyu-Dong Lee, Kang-Yong Ryoo, Jang-Ho Lee, Jin-Yong Im, Kyung-Sik Sohn, In-Ho Han
  • Freeze-grinding method of the waste materials using the cooled air
    Publication number: 20040231342
    Abstract: In method for freeze-crushing waste resources, freezing gas is first created by collecting freezing heat source of liquefied petroleum gas during a heat exchange process between the liquefied petroleum gas and cooling gas, and then the waste resources stored in a freezing tank is frozen to a temperature where the waste resources can be easily crushed by supplying the freezing gas to the freezing tank. Next, the frozen waste resources is crushed in an crushing apparatus, after which the freezing gas is separated from the crushed waste resources in a separate apparatus and the freezing gas for is collected the purpose of reuse.
    Type: Application
    Filed: August 14, 2003
    Publication date: November 25, 2004
    Inventors: Soon-Jin Hong, Kwang-Ho Choi, Kyu-Dong Lee, Kang-Yong Ryoo, Jang-Ho Lee, Jin-Yong Im, Kyung-Sik Sohn, In-Ho Han