Patents by Inventor Dong Hwan Cha

Dong Hwan Cha 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).

  • Patent number: 11993702
    Abstract: The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a base resin including at least two polypropylene-based resins having different melt indexes, an elastomer having a melt index (190° C., 2.16 kg) of 20 g/10 min to 35 g/10 min as measured by ASTM D1238, and inorganic particles, and has a flexural modulus (FM) of 2,500 MPa or more and a coefficient of linear thermal expansion (CLTE) of 60 ?m/m° C. or less.
    Type: Grant
    Filed: July 6, 2022
    Date of Patent: May 28, 2024
    Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, LOTTE CHEMICAL CORPORATION
    Inventors: Jin Young Yoon, Hee Joon Lee, Dong Eun Cha, Sun Jun Kwon, Chun Ho Park, Seung Ryong Jeong, Kyung Hwan Lim, Eun Hwa Jang
  • Publication number: 20240149837
    Abstract: A sensor cleaning apparatus for a vehicle includes: a sensor housing in which a driver and a sensor are mounted, a cover part configured to rotate and exposed to the outside of the sensor housing through an open region formed on a front surface of the sensor housing, and a blade part connected to the cover part. The blade is rotated as the driver is driven and provided to allow air generated by its rotation to flow toward a front surface and a rear surface of the cover.
    Type: Application
    Filed: June 13, 2023
    Publication date: May 9, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, DY AUTO Corporation
    Inventors: Sang Heon Wang, Nak Kyoung Kong, Dong Eun Cha, Kyung Hwan Kim, Jung Kwan Choi
  • Publication number: 20240109518
    Abstract: An apparatus for cleaning a sensor includes: at least one fluid flow path unit assembled and arranged to correspond to a size and a field of view (FOV) region of a sensor unit and formed with a spray flow path for flowing a fluid supplied through an inlet nozzle, a cover unit coupled to each of the fluid flow path units to shield an opened upper surface of the fluid flow path unit, and a spray nozzle unit selectively coupled to the cover unit and formed so that the fluid flowing along the spray flow path is sprayed toward the FOV region.
    Type: Application
    Filed: February 23, 2023
    Publication date: April 4, 2024
    Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION
    Inventors: Kyung Hwan Kim, Sang Heon Wang, Dong Eun Cha, Nak Kyoung Kong
  • Patent number: 11332851
    Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: May 17, 2022
    Assignee: HUVIS CO. LTD.
    Inventors: Seong-Hoon Kim, Jong-Hoon Park, Dong-Hwan Cha
  • Publication number: 20200071852
    Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.
    Type: Application
    Filed: November 7, 2019
    Publication date: March 5, 2020
    Inventors: SEONG-HOON KIM, JONG-HOON PARK, DONG-HWAN CHA
  • Patent number: 10513803
    Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: December 24, 2019
    Assignee: HUVIS CORPORATION, LTD.
    Inventors: Seong-Hoon Kim, Jong-Hoon Park, Dong-Hwan Cha
  • Publication number: 20180002833
    Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.
    Type: Application
    Filed: November 19, 2015
    Publication date: January 4, 2018
    Inventors: SEONG-HOON KIM, JONG-HOON PARK, DONG-HWAN CHA
  • Patent number: 7959752
    Abstract: A geogrid using fiber-reinforced polymeric strips and its producing method are disclosed. The geogrid of a lattice shape includes plural longitudinal fiber-reinforced polymeric strips longitudinally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin, and plural lateral fiber-reinforced polymer strip laterally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin. Each longitudinal fiber-reinforced polymer strip has at lease one first contact point crossed with the lateral fiber-reinforced polymer strip on the upper surface and at least one second contact point crossed with the lateral fiber-reinforced polymer strips on the lower surface. The contact points are fixed by welding the longitudinal and lateral fiber-reinforced polymer strips.
    Type: Grant
    Filed: December 30, 2003
    Date of Patent: June 14, 2011
    Assignee: Samyang Corporation
    Inventors: Kwang-Jung Yun, Seong-Ho Cho, Dong-Hwan Cha, Se-Whan Choi
  • Patent number: 7168453
    Abstract: A multi-wefts inserting weaving machine, comprising a block arraying device comprising an upper plate and a lower plate which face each other and are movable upward and downward; and a plural number of unit blocks attached to the internal facing sides of the upper plate and the lower plate of the block arraying device through combining grooves, wherein the unit blocks include two grooves. Accordingly, a lattice woven structure can be easily woven from heavy-duty materials by the present multi-wefts inserting weaving machine.
    Type: Grant
    Filed: June 27, 2006
    Date of Patent: January 30, 2007
    Assignees: T-FOR-L Co., Ltd., Samyang Corporation
    Inventors: Jin Sung Chon, Chang Kwon Lee, Seong Ho Cho, Dong Hwan Cha
  • Publication number: 20060116040
    Abstract: A geogrid using fiber-reinforced polymeric strips and its producing method are disclosed. The geogrid of a lattice shape includes plural longitudinal fiber-reinforced polymeric strips longitudinally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin, and plural lateral fiber-reinforced polymer strip laterally arranged in parallel at regular intervals and formed by reinforcing fiber in a thermoplastic polymer resin. Each longitudinal fiber-reinforced polymer strip has at lease one first contact point crossed with the lateral fiber-reinforced polymer strip on the upper surface and at least one second contact point crossed with the lateral fiber-reinforced polymer strips on the lower surface. The contact points are fixed by welding the longitudinal and lateral fiber-reinforced polymer strips.
    Type: Application
    Filed: December 30, 2003
    Publication date: June 1, 2006
    Inventors: Kwang-Jung Yun, Seong-Ho Cho, Dong-Hwan Cha, Se-Whan Choi