Patents Assigned to KH9100 LLC
  • Patent number: 11536875
    Abstract: A method to sublimate a wide variety of coatings onto optical lens includes printing a first coating using a sublimation transfer ink onto a sublimation paper, positioning the sublimation paper onto the optical lens to align the sublimation paper to a first surface of the optical lens, placing the sublimation paper thereon, preheating a chamber of a vacuum oven to a predetermined temperature, placing the optical lens into the chamber of the vacuum oven with the first surface of the optical lens facing upward, closing the vacuum oven and setting a predetermined time for heating, heating and vacuuming the chamber of the vacuum oven during about the predetermined time such that the first coating sublimates onto the first surface of the optical lens from the sublimation paper, removing from the vacuum oven and cooling the optical lens having the first coating on its first surface.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: December 27, 2022
    Assignee: KH9100 LLC
    Inventors: Kelly H. Kim, Dong Kwan Lee