Patents by Inventor Gu Youl Lee

Gu Youl Lee 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).

  • Portable security printed matter authentication device
    Patent number: 8038063
    Abstract: Provided is a portable security printed matter authentication device for authenticating security codes printed on security printed matter such as currency, vouchers, passports, and identification cards. The portable security printed matter authentication device includes: a housing including an observation hole at a top portion of the housing; a magnifying lens disposed to be close to the observation hole inside the housing; an optical filter disposed below the magnifying lens; and a plurality of LED (light-emitting diode) lamps which are disposed below the optical filter and illuminate light toward the security printed matter, wherein the LED lamps are a combination of two or more types of ultraviolet (UV) LED lamps, color LED lamps, and infrared (IR) lamps.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: October 18, 2011
    Assignee: M-Vision Co., Ltd.
    Inventor: Gu Youl Lee
  • Portable security printed matter authentication device
    Publication number: 20080237350
    Abstract: Provided is a portable security printed matter authentication device for authenticating security codes printed on security printed matter such as currency, vouchers, passports, and identification cards. The portable security printed matter authentication device includes: a housing including an observation hole at a top portion of the housing; a magnifying lens disposed to be close to the observation hole inside the housing; an optical filter disposed below the magnifying lens; and a plurality of LED (light-emitting diode) lamps which are disposed below the optical filter and illuminate light toward the security printed matter, wherein the LED lamps are a combination of two or more types of ultraviolet (UV) LED lamps, color LED lamps, and infrared (IR) lamps.
    Type: Application
    Filed: March 14, 2008
    Publication date: October 2, 2008
    Applicant: MVision Co., Ltd.
    Inventor: Gu Youl Lee