Patents by Inventor Wang Tak LEE

Wang Tak 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).

  • Functional packaging material for maintaining freshness having improved antimicrobial activity and method for making the same
    Patent number: 10363723
    Abstract: A functional food packaging material and a method for making the same, where the food packaging material includes: a first film comprising synthetic resin, calcium carbonate powder coated with zinc oxide, boehmite powder coated with titanium dioxide, and hydroxyapatite powder coated with iron; a second film laminated on the first film and comprising powdery particles that contain synthetic resin, loess, elvan, kaolin, zeolite, feldspar, black mica, jade, selenium and charcoal; and a third film laminated on the second film and made of synthetic film. The first film has a higher porosity than that of the second film, and the second film has a higher porosity than that of the third film. The food packaging material has improved antimicrobial activity and maximizes food storage stability. The amount of functional powder added is minimized so that the formability of the packaging material is not adversely affected.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: July 30, 2019
    Assignee: HANGREENTECH CO., LTD.
    Inventors: Dae Hyun Kim, Sung Kyun Park, Tae Soo Suh, Wang Tak Lee
  • FUNCTIONAL PACKAGING MATERIAL FOR MAINTAINING FRESHNESS HAVING IMPROVED ANTIMICROBIAL ACTIVITY AND METHOD FOR MAKING THE SAME
    Publication number: 20180065346
    Abstract: A functional food packaging material and a method for making the same, where the food packaging material includes: a first film comprising synthetic resin, calcium carbonate powder coated with zinc oxide, boehmite powder coated with titanium dioxide, and hydroxyapatite powder coated with iron; a second film laminated on the first film and comprising powdery particles that contain synthetic resin, loess, elvan, kaolin, zeolite, feldspar, black mica, jade, selenium and charcoal; and a third film laminated on the second film and made of synthetic film. The first film has a higher porosity than that of the second film, and the second film has a higher porosity than that of the third film. The food packaging material has improved antimicrobial activity and maximizes food storage stability. The amount of functional powder added is minimized so that the formability of the packaging material is not adversely affected.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 8, 2018
    Inventors: Dae Hyun KIM, Sung Kyun PARK, Tae Soo SUH, Wang Tak LEE