Patents by Inventor Jin Teak Hwang

Jin Teak Hwang 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).

  • Method for fabricating a preform for a plastic optical fiber and a preform for a plastic optical fiber fabricated thereby
    Patent number: 6429263
    Abstract: A method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising a firs step of introducing a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by rotating the reactor; a second step of compensating for a void formed by volume shrinkage from the polymerization in the first step with a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, and polymerizing the mixture in a centrifugal field generated by rotating the reactor, and a third step of repeating the second step until there is no void after polymerization
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: August 6, 2002
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Teak Hwang, O Ok Park, Sang Hyuk Im, Duck Jong Suh, Han Sol Cho
  • Method for fabricating a preform for a plastic optical fiber and a preform for a plastic optical fiber fabricated thereby
    Publication number: 20010026875
    Abstract: A method for fabricating a preform for a plastic optical fiber, having continuous refractive index profile in a radial direction, comprising a firs step of introducing a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, to a cylindrical reactor and polymerizing the mixture in a centrifugal field generated by rotating the reactor; a second step of compensating for a void formed by volume shrinkage from the polymerization in the first step with a mixture consisting of at least two substances, each having a different density and refractive index relative to each other, and polymerizing the mixture in a centrifugal field generated by rotating the reactor, and a third step of repeating the second step until there is no void after polymerization
    Type: Application
    Filed: January 10, 2001
    Publication date: October 4, 2001
    Inventors: Jin Teak Hwang, O Ok Park, Sang Hyuk Im, Duck Jong Suh, Han Sol Cho