Patents by Inventor Byung-Won Woo

Byung-Won Woo 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: 10875951
    Abstract: Disclosed is a propylene-diene copolymer resin having excellent melt tension, with improved melt strength, high molecular weight and broad molecular weight distribution by using a specific metallocene catalyst system. The present invention provides a propylene-diene copolymer resin produced by polymerizing propylene and a diene compound of C4-C20 by using a metallocene catalyst system, wherein the propylene-diene copolymer resin has the melt index (2.16 kg load at 230° C.) of 0.1-100 g/10 min and the melt tension (advanced rheometric expansion system (ARES)) of 5-100 g.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: December 29, 2020
    Assignee: LOTTE CHEMICAL CORPORATION
    Inventors: Byung Hun Chae, Hyun Yul Woo, Rai Ha Lee, Joon Keun Min, Sung Won Jung, Youn Jin Hong, Eun Hye Shin
  • Publication number: 20200295404
    Abstract: Provided are method for producing alkali metal hexafluorophosphate, alkali metal hexafluorophosphate powder, method for producing electrolyte concentrate comprising alkali metal hexafluorophosphate, and method for producing secondary battery. The method for preparing alkali metal hexafluorophosphate includes a step of obtaining an alkali metal hexafluorophosphate by reacting phosphorus pentafluoride with alkali metal fluoride in a haloformate solvent.
    Type: Application
    Filed: November 19, 2019
    Publication date: September 17, 2020
    Inventors: Byung Won WOO, Soon Hong PARK, Hong Seok LEE, Jae Woo JUNG, Hyun Gon KIM
  • Publication number: 20200131060
    Abstract: A nonpowered mixing and coagulation basin is provided, which generates turbulences of at least two kinds inside the mixing and coagulation basin to which the raw water flows so that foreign matters contained in the raw water come into contact with each other while circulating by a water flow to be coagulated into a predetermined size, and a dissolved air floatation device using the same. The nonpowered mixing and coagulation basin has multiple stages with different packing materials and packing densities to form turbulent flows inside the raw water and control a flow speed, thereby uniformly mixing raw water and coagulant to enhance coagulation efficiency. The nonpowered mixing and coagulation basin simultaneously carries out mixing and coagulation at the front end part of the water treatment system, reduces equipment expenses by having no electric motor and agitator, and reduces power consumption because it does not use any power unit.
    Type: Application
    Filed: December 26, 2019
    Publication date: April 30, 2020
    Inventors: Yong Hae PARK, Sung Won PARK, Byung Sung PARK, Sung Woo WOO
  • Patent number: 10550018
    Abstract: A nonpowered mixing and coagulation basin is provided, which generates turbulences of at least two kinds inside the mixing and coagulation basin to which the raw water flows so that foreign matters contained in the raw water come into contact with each other while circulating by a water flow to be coagulated into a predetermined size, and a dissolved air floatation device using the same. The nonpowered mixing and coagulation basin has multiple stages with different packing materials and packing densities to form turbulent flows inside the raw water and control a flow speed, thereby uniformly mixing raw water and coagulant to enhance coagulation efficiency. The nonpowered mixing and coagulation basin simultaneously carries out mixing and coagulation at the front end part of the water treatment system, reduces equipment expenses by having no electric motor and agitator, and reduces power consumption because it does not use any power unit.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: February 4, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Yong Hae Park, Sung Won Park, Byung Sung Park, Sung Woo Woo
  • Publication number: 20190270833
    Abstract: Disclosed are a catalyst having a high molecular weight by using a novel metallocene catalyst; a method for preparing a polyolefin by using the same; and a method for preparing an ethylene-propylene random copolymer having a high molecular weight and ethylene syndiotactic index and having a small crystal size, thereby having improved transparency during injection. The present invention provides a transition metal compound represented by chemical formula 1.
    Type: Application
    Filed: September 27, 2017
    Publication date: September 5, 2019
    Applicants: LOTTE CHEMICAL CORPORATION, LOTTE CHEMICAL CORPORATION
    Inventors: Byung Hun Chae, Joon Keun Min, Sung Won Jung, Youn Jin Hong, Hyun Yul Woo
  • Publication number: 20100048918
    Abstract: Provided is a method of manufacturing vinylethylene carbonate. The method includes synthesizing vinylethylene carbonate (VEC) by reaction of 3,4-dihydroxy-1-butene (3,4-DHB) and dialkyl carbonate using a base catalyst, and refining the VEC.
    Type: Application
    Filed: January 16, 2009
    Publication date: February 25, 2010
    Inventors: In-Soo Yeo, Byung-Won Woo, Seoung-Woo Yoon, Joo-Ho Lee, Soon-Hong Park, Nak-Jook Jang
  • Patent number: 7268238
    Abstract: The method of producing 4-fluoroethylene carbonate (FEC), in which ethylene carbonate (EC) reacts with a mixture of fluorine and nitrogen gases, includes feeding a mixture gas of fluorine gas and nitrogen gas into a reactor having ethylene carbonate charged therein, so as to react the ethylene carbonate with the mixture gas of the fluorine gas and the nitrogen gas. The mixture gas fed in the reactor is regulated to have a desired bubble size while passing through a gas bubble regulating column, in which a packing for a packed column is packed. In the method, EC directly reacts with F2/N2 mixture gas to produce FEC, thus a purification process is simple and it is possible to produce FEC at high conversion efficiency and selectivity.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: September 11, 2007
    Assignee: Ulsan Chemical Co., Ltd.
    Inventors: Byung Won Woo, Seoung Woo Yoon, Jun Ho Lee, Soon Hong Park, Nak Joon Jang, Hyo Jin Yoon
  • Patent number: 6387340
    Abstract: A method of preparing lithium hexafluoro phosphate (LiPF6) using phosphorous pentachloride (PCl5), lithium chloride (LiCl), and hydrogen fluoride (HF) as raw materials. The method includes the steps of: (a) reacting the phosphorous pentafluoride with the hydrogen fluoride to prepare phosphorous pentafluoride (PF5), and (b) reacting the phosphorous pentafluoride with the lithium chloride in a hydrogen fluoride to prepare the lithium hexafluoro phosphate. Also, in this method, anhydrous hydrogen fluoride, from which moisture was removed by treating with F2 gas, is used in the steps (a) and (b), and the step (b) further comprises contacting the reaction system of the step (b) with F2 gas. Accordingly, as the method adopts relatively cheap raw materials, such as PCl5, LiCl and the like, while a highly pure F2 obtained by an electrolysis is used in the reaction system, it has an advantage in that it enables lithium hexafluoro phosphate (LiPF6) to be prepared at a high yield and purity.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: May 14, 2002
    Assignee: Ulsan Chemical Co., Ltd.
    Inventors: Doo-Chan Na, Byung-Won Woo, Soon-Hong Park, Jun-Ho Lee