Patents by Inventor Sang Eun Park

Sang Eun Park 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).

  • Publication number: 20250250416
    Abstract: A composition for an encapsulant film, comprising an ethylene/alpha-olefin copolymer, an organic peroxide crosslinking agent, a crosslinking auxiliary agent and a silane coupling agent. If an encapsulant film is manufactured using the composition for an encapsulant film, the immersion time of an ethylene/alpha-olefin copolymer may be reduced, and the economic feasibility of the production process of the encapsulant film may be improved. In addition, the composition for an encapsulant film shows an excellent degree of crosslinking. The encapsulant film comprising the composition for an encapsulant film and a solar cell module comprising the encapsulant film are also provided.
    Type: Application
    Filed: May 31, 2023
    Publication date: August 7, 2025
    Applicant: LG Chem, Ltd.
    Inventors: Jong Gil Kim, Eun Jung Lee, Jin Sam Gong, Sang Eun Park, Si Jung Lee
  • Publication number: 20250188099
    Abstract: Provided are a crosslinking agent composition for an olefin-based copolymer, an encapsulant composition for an optical device, an encapsulant film for an optical device, and an optoelectronic device, wherein a compound of Formula 1 as a crosslinking auxiliary agent is applied in the crosslinking agent composition for an olefin-based copolymer or an encapsulant composition for an optical device, showing excellent productivity and high volume resistivity and light transmittance, wherein all the variables are as described herein.
    Type: Application
    Filed: July 10, 2023
    Publication date: June 12, 2025
    Applicant: LG Chem, Ltd.
    Inventors: Si Jung Lee, Eun Jung Lee, Jin Sam Gong, Sang Eun Park, Jin Kuk Lee, Jong Gil Kim
  • Publication number: 20250178226
    Abstract: A cutting device for an electrode base material comprises a travel motion part guiding a travel motion of the electrode base material along a travel motion path, a defect sensing part disposed on the travel motion path and provided to sense defective portions of the electrode base material, a cutting part provided to cut the electrode base material into a plurality of unit electrodes, provided to be movable along the travel motion path, and provided so that a good product cutting position for cutting a normal electrode among the plurality of unit electrodes and a defect cutting position for cutting a defective electrode including the defective portion are different, an electrode discharge part provided to discharge to the outside the normal electrode cut at the good product cutting position, and a defect recovery part in which the defective electrode cut at the defect cutting position is stored.
    Type: Application
    Filed: August 28, 2023
    Publication date: June 5, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Yang Lae Kim, Woong Ki Kim, Young Soo Lee, Dong Soon Choi, Do Seong Han, Sang Eun Park
  • Patent number: 12319761
    Abstract: The present invention relates to an olefin-based polymer satisfying requirements: (1) a melt index (MI, 190° C., 2.16 kg load conditions) ranging from 1.0 to 10.0 g/10 min; (2) a density (d) ranging from 0.875 to 0.895 g/cc; (3) 0.5 J/g?dH(100)?3.0 J/g and 1.0 J/g?dH(90)?6.0 J/g as measured by successive self-nucleation/annealing (SSA) using a differential scanning calorimeter (DSC); (4) 15?T(90)?T(50)?30 and 50° C.?T(50)?75° C. as measured by SSA using a DSC; and (5) a melting point (Tm) of 55° C.?Tm?80° C. as measured using a DSC. The olefin-based polymer according to the present invention is a low-density olefin-based polymer and has a highly crystalline region introduced therein, thereby exhibiting high mechanical stiffness.
    Type: Grant
    Filed: July 2, 2021
    Date of Patent: June 3, 2025
    Assignee: LG Chem, Ltd.
    Inventors: In Sung Park, Ji Yoon Woo, Sang Eun Park, Ki Eun Kim, Sang Wook Han
  • Patent number: 12312458
    Abstract: The present invention relates to a polypropylene-based composite, including (A) polypropylene, and (B) an olefin-based polymer satisfying the following conditions: (1) a melt index (MI, 190° C., 2.16 kg load conditions) is from 0.1 g/10 min to 10.0 g/10 min, (2) a melting temperature when measured by differential scanning calorimetry (DSC) is from 20° C. to 70° C., and (3) a high temperature melting peak is confirmed at 75° C. to 150° C. when measured by a differential scanning calorimetry precise measurement method (SSA), and a total enthalpy of fusion ?H(75) of a corresponding region is 1.0 J/g or more. The polypropylene-based composite of the present invention may show excellent impact strength.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: May 27, 2025
    Assignee: LG Chem, Ltd.
    Inventors: In Sung Park, Eun Jung Lee, Sang Eun Park, Tae Su Kim, Choong Hoon Lee, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak
  • Publication number: 20250101203
    Abstract: Provided is an encapsulant film composition; including an ethylene/alpha-olefin copolymer and a crosslinking aid comprises a compound represented by Formula 1 below, an encapsulant film, and a solar cell module thereof. When an encapsulant film is produced using the encapsulant film composition, the immersing time of an ethylene/alpha-olefin copolymer is reduced so that the economic viability of a process of producing an encapsulant film can be improved. In addition, the encapsulant film composition produced exhibits excellent crosslinking degree. wherein R1 to R6 are described herein.
    Type: Application
    Filed: June 7, 2023
    Publication date: March 27, 2025
    Applicant: LG Chem, Ltd.
    Inventors: Young Woo Lee, Jin Sam Gong, Sang Eun Park, Si Jung Lee, Jong Gil Kim, Eun Jung Lee
  • Patent number: 12240967
    Abstract: The present invention relates to a polypropylene-based composite, including (A) polypropylene, and (B) an olefin-based polymer satisfying the following conditions: (1) a melt index (MI, 190° C., 2.16 kg load conditions) is from 0.1 g/10 min to 10.0 g/10 min, (2) a density (d) is from 0.860 g/cc to 0.880 g/cc, and (3) T(90)-T(50)?50 and T(95)-T(90)?10 are satisfied, wherein T(50), T(90) and T(95) are temperatures at which 50%, 90%, and 95% are melted, respectively, when fractionating a temperature-heat capacity curve from measurement results by the differential scanning calorimetry precise measurement method (SSA). The polypropylene-based composite of the present invention may show excellent impact strength.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: March 4, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Sang Eun Park, Eun Jung Lee, In Sung Park, Tae Su Kim, Choong Hoon Lee, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak
  • Patent number: 12162967
    Abstract: An olefin-based polymer and method of making the same is disclosed herein. In some embodiments, the olefin-based polymer has multiple crystallinity and satisfies the following: (1) two or more peaks in a temperature range of ?20° C. to 120° C. when measured by cross-fractionation chromatography (CFC), and T(90)?T(50)<8.0° C., (2) a soluble fraction (SF) of 1 wt % or less at ?20° C. in CFC, (3) 15° C.<elution temperature (Te)<50° C., and Te has a linear correlation with a density (d) of the polymer, and satisfies the following Equation 1, Te=1,220×d?A, wherein 1,031?A?1,039. The olefin-based polymer according to the present invention is an olefin-based polymer having relatively increased the ratio of high crystal regions, and exhibits excellent mechanical properties such as improved tensile strength, tear strength, and flexural modulus.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: December 10, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Sang Eun Park, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak, Choong Hoon Lee, Tae Su Kim
  • Patent number: 12134668
    Abstract: The present invention relates to an olefin-based polymer satisfying conditions as follow: (1) a melt index (MI, 190° C., 2.16 kg load conditions) is from 0.1 g/10 min to 10.0 g/10 min, (2) a density (d) is from 0.860 g/cc to 0.880 g/cc, and (3) T(90)?T(50)?50 and T(95)?T(90)?10 are satisfied when measured by a differential scanning calorimetry precise measurement method (SSA). The olefin-based polymer according to the present invention is a low-density olefin-based polymer introducing a highly crystalline region and showing high mechanical rigidity.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: November 5, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Sang Eun Park, Eun Jung Lee, In Sung Park, Tae Su Kim, Choong Hoon Lee, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak
  • Publication number: 20240352204
    Abstract: An encapsulant film composition including an ethylene/alpha-olefin copolymer and a crosslinking aid comprising a compound represented by Formula 1 below, an encapsulant film, and a solar cell module are described. When an encapsulant film is produced using such encapsulant film composition, the immersing time of an ethylene/alpha-olefin copolymer is reduced so that the economic viability of a process of producing an encapsulant film can be improved. In addition, the encapsulant film composition produced exhibits excellent crosslinking degree. wherein all the variables are described herein.
    Type: Application
    Filed: May 16, 2023
    Publication date: October 24, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Jin Sam Gong, Eun Jung Lee, Sang Eun Park, Si Jung Lee, Jong Gil Kim
  • Publication number: 20240277310
    Abstract: According to the bladder volume measuring device according to the present invention, it is possible to calculate the shape coefficient based on information about the bladder shape generated from the determination unit that performs artificial intelligence learning on bladder ultrasound image big data and more accurately measure the amount of urine contained in the bladder by calculating the bladder volume based on the ultrasound image and the shape coefficient.
    Type: Application
    Filed: February 8, 2024
    Publication date: August 22, 2024
    Applicant: EDGECARE INC.
    Inventors: Sang Eun PARK, Sang Whui WON, Hyun Woo CHO, Jung Jun KIM
  • Patent number: 12065515
    Abstract: The present invention relates to a polypropylene-based composite material having improved physical properties including impact strength at low temperature and at room temperature, flexural strength, flexural modulus, etc., and a method for preparing the same.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: August 20, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Sang Eun Park, In Sung Park, Eun Jung Lee, Hyun Jin Ju, Tae Su Kim, Choong Hoon Lee, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak
  • Patent number: 12037426
    Abstract: The present invention relates to an olefin-based copolymer of which soluble fraction at a low temperature has a high weight average molecular weight, and which has high flowability and improved physical properties of hardness, flexural strength, tearing strength, etc., and a method for preparing the same.
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: July 16, 2024
    Assignee: LG Chem, Ltd.
    Inventors: In Sung Park, Sang Eun Park, Eun Jung Lee, Hyun Jin Ju, Tae Su Kim, Choong Hoon Lee, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak
  • Publication number: 20240228747
    Abstract: A crosslinking auxiliary composition for an olefin-based copolymer, a crosslinking composition, and an additive for an encapsulant composition for an optical device are described, and by using them that comprising a compound of the following Formula 1, an encapsulant composition for an optical device and an encapsulant film for an optical device, having high volume resistance and light transmittance could be obtained, wherein l, m, n, and o are each independently an integer of 0 to 4.
    Type: Application
    Filed: November 10, 2022
    Publication date: July 11, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Jin Kuk Lee, Eun Jung Lee, Sang Eun Park, Young Woo Lee, Sang Wook Han
  • Publication number: 20240199828
    Abstract: A composition for an encapsulant film, comprising an ethylene/alpha-olefin copolymer, a crosslinking agent, a crosslinking auxiliary agent comprising a compound represented by the following Formula 1, and a silane coupling agent, an encapsulant film and a solar cell module thereof is described herein, and by using such composition, the immersion time of an ethylene/alpha-olefin copolymer may be reduced to improve the economic feasibility of the production process of an encapsulant film, and excellent degree of crosslinking is provided: wherein R1 to R8 are described herein.
    Type: Application
    Filed: October 25, 2022
    Publication date: June 20, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Jin Sam Gong, Eun Jung Lee, Sang Eun Park, Sang Hyun Hong, Jin Kuk Lee, Jong Gil Kim, Sang Wook Han
  • Patent number: 11992121
    Abstract: An embodiment of the present invention provides a fixing assembly comprising: a wire rack having a vertical frame and a horizontal frame; a slide rail which has a fixed rail coupled to the wire rack and a movable rail slidably disposed on the fixed rail; and a fixing means for fastening the fixed rail to the wire rack, wherein the fixing means comprises a first fixing clip provided on one side of the fixed rail and a second fixing clip provided on the other side of the fixed rail. The fixing assembly has a structure in which the first fixing clip is fixed laterally to the horizontal frame, and then the second fixing clip is fixed vertically to the horizontal frame.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: May 28, 2024
    Assignee: SEGOS CO., LTD.
    Inventors: Doo Myun Lee, Sang Eun Park
  • Publication number: 20240124627
    Abstract: An encapsulant composition for an optical device; comprises an ethylene/alpha-olefin copolymer having high volume resistance and light transmittance. An encapsulant film for an optical device using the same is also provided.
    Type: Application
    Filed: November 10, 2022
    Publication date: April 18, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Jin Kuk Lee, Eun Jung Lee, Sang Eun Park, Sang Hyun Hong, Young Woo Lee, Jung Ho Jun
  • Publication number: 20240088428
    Abstract: A negative active material for a rechargeable lithium battery includes a core including a SiO2 matrix and a Si grain, and a coating layer continuously or discontinuously coated on the core. The coating layer includes SiC and C, and the peak area ratio of the SiC (111) plane to the Si (111) plane as measured by X-ray diffraction analysis (XRD) using a CuK? ray ranges from about 0.01 to about 0.5.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Inventors: Sang-Eun Park, Young-Ugk Kim
  • Publication number: 20240026046
    Abstract: The present invention relates to an olefin-based polymer, particularly, to a low-density olefin-based polymer introducing a highly crystalline region and showing high mechanical rigidity.
    Type: Application
    Filed: March 23, 2022
    Publication date: January 25, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Sang Eun Park, Ji Yoon Woo, In Sung Park, Choong Hoon Lee, Ki Eun Kim, Rae Keun Gwak
  • Patent number: 11830972
    Abstract: A negative active material for a rechargeable lithium battery includes a core including a SiO2 matrix and a Si grain, and a coating layer continuously or discontinuously coated on the core. The coating layer includes SiC and C, and the peak area ratio of the SiC (111) plane to the Si (111) plane as measured by X-ray diffraction analysis (XRD) using a CuK? ray ranges from about 0.01 to about 0.5.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: November 28, 2023
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang-Eun Park, Young-Ugk Kim