Patents by Inventor Jeong-Soo Choi

Jeong-Soo Choi 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).

  • Aliphatic polyester compounds having highly branched structure as a plasticizer of polyvinylchloride and flexible polyvinylchloride blend containing the same
    Patent number: 6747092
    Abstract: The present invention discloses aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer and polyvinylchloride blend containing the same. Aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer according to the present invention is formed by self-condensation polymerization of monomer having one carboxy functional group and two hydroxy functional groups. Since such aliphatic polyester having highly branched structure has superior compatibility with polyvinylchloride and never flows out contrary to the conventional liquid plasticizer having low molecular weight of phthalate, etc., the problems such as the disturbance of endocrine system of human body and the destruction of ecosystem due to the efflux of plasticizer is not caused and since the same has superior efficiency of plasticization, it is possible to give polyvinylchloride sufficient flexibility.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: June 8, 2004
    Assignee: Ecotech Co., Ltd.
    Inventors: Seung-Yeop Kwak, Jeong-Soo Choi
  • Method and system for assigning unique identity codes to remote controllers and conserving power based on detecting the unique identity codes
    Patent number: 6570507
    Abstract: Methods and systems are provided for a remote-controllable electronic appliance and a remote controller. A unique call identification code is assigned to each remote controller. The remote-controllable electronic appliance may then call a remote controller based on the unique call identification code. The call identification code may continuously varied after a predetermined period of time. The call identification code may be reset based on a request by the remote controller. Power consumption by the remote controller may also be conserved based on detecting the call identification code.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: May 27, 2003
    Assignee: LG Electronics Inc.
    Inventors: Jae-Kyung Lee, Jeong-Soo Choi
  • Aliphatic polyester compounds having highly branched structure as a plasticizer of polyvinylchloride and flexible polyvinylchloride blend containing the same
    Publication number: 20020111406
    Abstract: The present invention discloses aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer and polyvinylchloride blend containing the same. Aliphatic polyester compound having highly branched structure for polyvinylchloride plasticizer according to the present invention is formed by self-condensation polymerization of monomer having one carboxy functional group and two hydroxy functional groups. Since such aliphatic polyester having highly branched structure has superior compatibility with polyvinylchloride and never flows out contrary to the conventional liquid plasticizer having low molecular weight of phthalate, etc., the problems such as the disturbance of endocrine system of human body and the destruction of ecosystem due to the efflux of plasticizer is not caused and since the same has superior efficiency of plasticization, it is possible to give polyvinylchloride sufficient flexibility.
    Type: Application
    Filed: December 4, 2001
    Publication date: August 15, 2002
    Inventors: Seung-Yeop Kwak, Jeong-Soo Choi