Patents by Inventor Ja Heung Koo

Ja Heung Koo 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).

  • Edging process of lens using transparent coating layer for protecting lens
    Patent number: 9134461
    Abstract: The present invention relates to a process of edging a lens comprising forming a lens-protective transparent coating layer on the surface of the lens. When the lens coated with a transparent coating layer comprising a fluorine-containing elastomer and optionally a fluorine-containing organosilane compound and having a surface energy of less than 15 mJ/m2 is edged, the scratch of lens during handling, the damage of lens caused by chemical contaminants, and lens off-centring phenomena can be prevented. Further, such an edging process requires no adhesive tape, making the process simple, and prevents the contamination of the lens surface. Further, the inventive transparent coating layer makes it possible to measure the diopter of lens exactly owing to its transparency and it is manually removable without a chemical.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: September 15, 2015
    Assignee: Essilor International (Compagnie Generale d'Optique)
    Inventors: Hun Rae Kim, Jeong Ki Kang, Ja Heung Koo, Sun Do Lee
  • Edging Process of Lens Using Transparent Coating Layer for Protecting Lens
    Publication number: 20080292787
    Abstract: The present invention relates to a process of edging a lens comprising forming a lens-protective transparent coating layer on the surface of the lens. When the lens coated with a transparent coating layer comprising a fluorine-containing elastomer and optionally a fluorine-containing organosilane compound and having a surface energy of less than 15 mJ/m2 is edged, the scratch of lens during handling, the damage of lens caused by chemical contaminants, and lens off-centring phenomena can be prevented. Further, such an edging process requires no adhesive tape, making the process simple, and prevents the contamination of the lens surface. Further, the inventive transparent coating layer makes it possible to measure the diopter of lens exactly owing to its transparency and it is manually removable without a chemical.
    Type: Application
    Filed: March 27, 2007
    Publication date: November 27, 2008
    Applicant: Essilor International (Compagnie Generale d'Optique
    Inventors: Hun Rae Kim, Jeong Ki Kang, Ja Heung Koo, Sun Do Lee