Patents by Inventor Kwang-Sang Lee

Kwang-Sang 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).

  • Publication number: 20250023237
    Abstract: According to an embodiment of the present disclosure, provided is a radiation element structure arranged on a reflective plate, comprising: a radiation unit including a dielectric portion made from plastic material and first to fourth radiation arms arranged in a four-sided symmetrical structure on one surface of the dielectric portion; and a plurality of balun units, including a balun body connecting the reflective plate and the radiation unit, a feed line disposed on the upper surface of the balun body to feed the radiation unit, and a ground disposed on the lower surface of the balun body.
    Type: Application
    Filed: September 27, 2024
    Publication date: January 16, 2025
    Applicant: KMW INC.
    Inventors: Young Chan MOON, Sung Hwan SO, Kwang Seok CHOI, Seong Man KANG, Hun Jung JUNG, Seung Han SON, Yong Sang LEE, Oh Seog CHOI
  • Patent number: 10940678
    Abstract: The present invention provides polyamide compositions comprising (a) at least one high chain-length polyamide [polyamide (PA)]; (b) at least one grafted polyolefin [olefin (PO)]; and (c) at least one aromatic diacid [acid (DA)]. The polyamide composition can be advantageously used as a material to be coated on a surface of metal component.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: March 9, 2021
    Assignee: Performance Polyamides, SAS
    Inventors: Kwang-Sang Lee, Mok-Keun Lim
  • Patent number: 10336904
    Abstract: A resin blend composition of a polyamide resin and a polyester resin is described, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition can have improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, and paintability.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: July 2, 2019
    Assignee: RHODIA OPERATIONS
    Inventors: Mok-Keun Lim, Kwang-Sang Lee, Yeong-Chool Yu
  • Patent number: 10253184
    Abstract: Provided is a composition comprising a) at least one semi-crystalline polyamide, b) at least one conductive material, and c) at least one amorphous polyamide, and optionally d) at least one polyester. The composition may further comprise e) at least one filler and f) at least one additive.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: April 9, 2019
    Assignee: RHODIA OPERATIONS
    Inventor: Kwang-Sang Lee
  • Publication number: 20170145212
    Abstract: A resin blend composition of a polyamide resin and a polyester resin is described, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition can have improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, and paintability.
    Type: Application
    Filed: January 26, 2017
    Publication date: May 25, 2017
    Inventors: Mok-Keun LIM, Kwang-Sang LEE, Yeong-Chool YU
  • Publication number: 20170081514
    Abstract: Provided is a composition comprising a) at least one semi-crystalline polyamide, b) at least one conductive material, and c) at least one amorphous polyamide, and optionally d) at least one polyester. The composition may further comprise e) at least one filler and f) at least one additive.
    Type: Application
    Filed: May 11, 2015
    Publication date: March 23, 2017
    Inventor: Kwang-Sang LEE
  • Publication number: 20160289497
    Abstract: The present invention provides polyamide compositions comprising (a) at least one high chain-length polyamide [polyamide (PA)]; (b) at least one grafted polyolefin [olefin (PO)]; and (c) at least one aromatic diacid [acid (DA)]. The polyamide composition can be advantageously used as a material to be coated on a surface of metal component.
    Type: Application
    Filed: November 7, 2014
    Publication date: October 6, 2016
    Applicant: RHODIA OPERATIONS
    Inventors: Kwang-Sang LEE, Mok-Keun LIM
  • Publication number: 20150080534
    Abstract: The present invention concerns a method of preparing a hybrid fiber including polyamide and polyester. Particularly, the method of preparing a hybrid fiber comprises, forming a blend by melting a) 4.99 to 95% by weight of a thermoplastic polyamide resin, b) 4.99 to 95% by weight of a thermoplastic polyester resin, and c) 0.01 to 10% by weight of an epoxy resin at 250 to 300° C., and blend spinning and elongating 10 to 90% by weight of the blend with 90 to 10% by weight of a polyester resin. The hybrid fiber shows highly improved compatibility of the polyamide resin and the thermoplastic polyester resin, and shows excellent strength and elongation.
    Type: Application
    Filed: March 7, 2013
    Publication date: March 19, 2015
    Inventors: Mok-Keun Lim, Kwang Sang Lee, Yeong Chool Yu
  • Patent number: 8900745
    Abstract: Packing seals made from a polyamide composition including at least polyamide 66 and polyamide 610 for alkaline batteries, optionally fillers and/or additives are described. The packing seals can be used in particular for standard “AAA” (LR03) and “AA” (LR6) batteries.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: December 2, 2014
    Assignee: Rhodia Operations
    Inventors: Kwang-Sang Lee, Yeong Chool Yu
  • Publication number: 20130200308
    Abstract: Packing seals made from a polyamide composition including at least polyamide 66 and polyamide 610 for alkaline batteries, optionally fillers and/or additives are described. The packing seals can be used in particular for standard “AAA” (LR03) and “AA” (LR6) batteries.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 8, 2013
    Applicant: RHODIA OPERATIONS
    Inventors: Kwang-Sang Lee, Yeong Chool Yu
  • Publication number: 20120108701
    Abstract: A resin blend composition of a polyamide resin and a polyester resin is described, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition can have improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, and paintability.
    Type: Application
    Filed: June 18, 2010
    Publication date: May 3, 2012
    Inventors: Mok-Keun Lim, Kwang-Sang Lee, Yeong Chool Yu