Patents by Inventor Sung Yup Moon

Sung Yup Moon 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).

  • High-Viscosity Biodegradable Aliphatic-Aromatic Polyester Copolymer Having Excellent Hydrolysis Resistance and Method of Preparing the Same
    Publication number: 20240174795
    Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.
    Type: Application
    Filed: August 11, 2023
    Publication date: May 30, 2024
    Inventors: Do Young Kim, Hyun Sik Yang, Yu Hyun Kim, Ki Yup Kim, Joo Hyun Nam, Chul Soon Moon, Ji Hae Park, Sung Won Lee, Jun Haeng Lee, Ho Seung Lee
  • High-viscosity biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and method of preparing the same
    Patent number: 11987667
    Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.
    Type: Grant
    Filed: August 11, 2023
    Date of Patent: May 21, 2024
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Do Young Kim, Hyun Sik Yang, Yu Hyun Kim, Ki Yup Kim, Joo Hyun Nam, Chul Soon Moon, Ji Hae Park, Sung Won Lee, Jun Haeng Lee, Ho Seung Lee
  • Uncoated fabric for producing airbags
    Patent number: 5952250
    Abstract: An uncoated fabric for producing airbags, said fabric woven of synthetic monofilaments and having a monofilament denier in the weft which is less than that of the warp.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: September 14, 1999
    Assignee: Kolon Industries, Inc.
    Inventors: Kwang Oh Kim, Sang Mok Lee, Sung Yup Moon