Patents by Inventor Eun KO

Eun KO 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: 20060063016
    Abstract: The present invention relates to a metallic laminate for printed-circuit base board composed of two low thermal expansion polyimide resin layers having thermal expansion coefficient of up to 20 ppm/?, a metal conductor layer, and a high thermal expansion polyimide resin layer having thermal expansion coefficient of more than 20 ppm/? which is loaded on the above low thermal expansion polyimide resin layers, and a preparation method of the same.
    Type: Application
    Filed: September 20, 2005
    Publication date: March 23, 2006
    Inventors: Joo-eun Ko, Soon-yong Park, Heon-sik Song
  • Publication number: 20040010062
    Abstract: The present invention relates to a polyimide copolymer used in a precursor of heat resistant adhesive and methods for preparing the same, and more particularly, to a polyamic acid copolymer and methods for preparing the same obtained by controlling a polymerization degree of the tetracarboxylic acid dianhydride and aromatic diamine. The present invention also comprises a polyimide copolymer obtained by curing the polyamic acid copolymer, and methods for preparing the same. The present invention also provides a heat resistant adhesive composition comprising the polyamic acid copolymer and the polyimide copolymer, and a semiconductor device using the same. The polyamic acid copolymer used in a precursor and polyimide copolymer obtained therefrom of the present invention has superior adhesion strength and simultaneously satisfies physical properties like high heat resistance and low water absorption rate, etc. and thus it can be effectively adhered parts of semiconductor devices, etc.
    Type: Application
    Filed: April 18, 2003
    Publication date: January 15, 2004
    Inventors: Byeong-In Ahn, You-Jin Kyung, Joo-Eun Ko, Heon-Sik Song
  • Patent number: 5950758
    Abstract: Disclosed is a rear wheel neutralizing system for a four-wheel steering vehicle, including an actuator for returning rear wheels to their neutral positions; a potentiometer for detecting a returning displacement to the neutral position of the wheel; a motor for operating the actuator; a vehicle speed sensor for detecting vehicle speeds; and an electronic control unit for determining whether the four-wheel steering system is malfunctioning and for operating the motor while receiving a signal from the vehicle speed sensor. The rear wheel neutralizing system further comprises an encoder for detecting the angular velocity of the motor and transmitting a signal on the angular velocity to the electronic control unit.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: September 14, 1999
    Assignee: Kia Motors Corporation
    Inventors: Sung-ha Kim, Young-eun Ko