Patents by Inventor Mi Jeong Choi

Mi Jeong 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).

  • Patent number: 8915604
    Abstract: A prism sheet includes a base film having one flat surface and an optical refractive section having a plurality of prisms arranged along a first direction to constitute first and second prism parts. The optical refractive section is integrally formed with another surface of the base film that is opposite to the flat surface of the base film, and each of the prisms has a predetermined cross-sectional shape. The first prism part includes a first prism of the plurality of prisms, which first prism has a constant height along a second direction that intersects the first direction. The second prism part includes a second prism of the plurality of prisms, which second prism has a variable height in the second direction, and a maximum value of the variable height of the second prism is higher than the constant height of the first prism.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: December 23, 2014
    Assignee: Cheil Industries, Inc.
    Inventors: Mi Jeong Choi, Kyoung Gon Park, Su Kyong Lee
  • Publication number: 20130170188
    Abstract: A prism sheet includes a base film having one flat surface and an optical refractive section having a plurality of prisms arranged along a first direction to constitute first and second prism parts. The optical refractive section is integrally formed with another surface of the base film that is opposite to the flat surface of the base film, and each of the prisms has a predetermined cross-sectional shape. The first prism part includes a first prism of the plurality of prisms, which first prism has a constant height along a second direction that intersects the first direction. The second prism part includes a second prism of the plurality of prisms, which second prism has a variable height in the second direction, and a maximum value of the variable height of the second prism is higher than the constant height of the first prism.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 4, 2013
    Inventors: Mi Jeong CHOI, Kyoung Gon PARK, Su Kyong LEE
  • Publication number: 20130155517
    Abstract: An optical film including a base film, a light spreading pattern on a first surface of the base film, a surface of the light spreading pattern facing away from the base film being an undulating surface, and a light collecting pattern on a second surface of the base film.
    Type: Application
    Filed: December 13, 2012
    Publication date: June 20, 2013
    Inventors: Kyoung Gon PARK, Ki Yong KIM, Su Kyong LEE, Mi Jeong CHOI
  • Publication number: 20100268610
    Abstract: The present invention relates to an online advertising method and an online advertising system, and more particularly, relates to an online advertising method and an online advertising system using a knowledge providing service system which enables knowledge to be provided through questions and answers between users.
    Type: Application
    Filed: April 29, 2010
    Publication date: October 21, 2010
    Applicant: NHN CORPORATION
    Inventors: RA YOUNG YANG, MI JEONG CHOI, WOO SUNG LEE
  • Publication number: 20100049607
    Abstract: A method and system for displaying a knowledge advertisement which can provide a knowledge document that is retrieved in response to a knowledge search request, and also can provide paid advertisement information of an advertiser, and thereby can create advertising effect using a knowledge search and also can prevent the abusive registration of poor advertising questions/answers is provided. Therefore, there may be provided a method and system for displaying a knowledge advertisement which can develop questions and answers corresponding to advertisement knowledge and generate a construction where a system operator can optimally inspect the questions and the answers, and thereby can prevent the abusive registration of advertising questions and answers.
    Type: Application
    Filed: November 13, 2007
    Publication date: February 25, 2010
    Applicant: NHN Business Platform Corporation
    Inventors: Woosung Lee, Mi Jeong Choi