Patents by Inventor Sang-Won Yoo

Sang-Won Yoo 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).

  • Multimodal polyolefin resin and molded product prepared therefrom
    Patent number: 10040883
    Abstract: Multimodal polyolefin resin having excellent characteristics such as moldability, mechanical strength, external appearance and a polyolefin resin molded product are disclosed. The polyolefin resin satisfies all requirements of following (1) to (5), (1) density (d): 0.934 to 0.963 g/cm3, (2) melt flow index (MIE, 190° C., 2.16 kg load condition): 0.01 to 1.0 g/10 minutes, (3) ratio of weight-average molecular weight (Mw) and number-average molecular weight (Mn) measured by Gel Permeation Chromatography (GPC) (Mw/Mn, Molecular weight distribution (MWD)): 12 to 60, (4) at least two peaks appear when the molecular weight of the polyolefin resin is measured with GPC, and (5) amount of polyolefin having Mw of 10,000 or less exceeds 15 weight % and amount of polyolefin having Mw of 1,000,000 or more exceeds 1.5 weight %, when the molecular weight of the polyolefin resin is measured with GPC.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: August 7, 2018
    Assignee: DAELIM INDUSTRIAL CO., LTD.
    Inventors: Byung-Keel Sohn, Seung-Tack Yu, Sang-Won Yoo, Young-Jae Jun, Sah-Mun Hong
  • MULTIMODAL POLYOLEFIN RESIN AND MOLDED PRODUCT PREPARED THEREFROM
    Publication number: 20150017365
    Abstract: Multimodal polyolefin resin having excellent characteristics such as moldability, mechanical strength, external appearance and a polyolefin resin molded product are disclosed. The polyolefin resin satisfies all requirements of following (1) to (5), (1) density (d): 0.934 to 0.963 g/cm3, (2) melt flow index (MIE, 190° C., 2.16 kg load condition): 0.01 to 1.0 g/10 minutes, (3) ratio of weight-average molecular weight (Mw) and number-average molecular weight (Mn) measured by Gel Permeation Chromatography (GPC) (Mw/Mn, Molecular weight distribution (MWD)): 12 to 60, (4) at least two peaks appear when the molecular weight of the polyolefin resin is measured with GPC, and (5) amount of polyolefin having Mw of 10,000 or less exceeds 15 weight % and amount of polyolefin having Mw of 1,000,000 or more exceeds 1.5 weight %, when the molecular weight of the polyolefin resin is measured with GPC.
    Type: Application
    Filed: September 30, 2014
    Publication date: January 15, 2015
    Inventors: Byung-Keel Sohn, Seung-Tack Yu, Sang-Won Yoo, Young-Jae Jun, Sah-Mun Hong