Patents by Inventor Hyuck Man KWON

Hyuck Man KWON 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).

  • Polyphosphonate Resin Composition and Molded Product Manufactured Therefrom
    Publication number: 20230227614
    Abstract: A polyphosphonate resin composition of the present invention comprises: approximately 100 parts by weight of a polyphosphonate resin comprising a repeating unit represented by chemical formula 1; and approximately 0.01-0.05 parts by weight of a sulfonate compound represented by chemical formula 2. The polyphosphonate resin composition has excellent thermal discoloration resistance, light discoloration resistance, flame retardancy, light transmittance and the like.
    Type: Application
    Filed: June 29, 2021
    Publication date: July 20, 2023
    Inventors: Jung Jae LEE, Jin Yong BAE, Hyuck Man KWON, Jun Ho CHI
  • Polycarbonate resin for film, method for preparing the same and film including the same
    Patent number: 10233283
    Abstract: A polycarbonate resin includes a repeat unit represented by Formula 1; a repeat unit represented by Formula 2; and a repeat unit represented by Formula 3, wherein the polycarbonate resin has a weight average molecular weight of about 15,000 g/mol to about 60,000 g/mol and a melt index of about 3 g/10 min to about 40 g/10 min.: wherein R1, R2, R3, R4, a, b, c, and d are the same as defined in the specification. The polycarbonate resin for film can exhibit excellent scratch resistance, elongation, chemical resistance and heat resistance, and can be used to prepare a film in roll form without any protective film.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: March 19, 2019
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Jun Ho Chi, O Sung Kwon, Jong Chan Hur, Hyuck Man Kwon, Dong Geun Lee, Woo Suk Chei, Bok Nam Jang
  • Polycarbonate and method of preparing the same
    Patent number: 9765184
    Abstract: A polycarbonate resin of the present invention is characterized by comprising repeating units represented by Formula 1, Formula 2, Formula 3 and Formula 4, respectively.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: September 19, 2017
    Assignee: Lotte Advanced Materials Co., Ltd.
    Inventors: Jun Ho Chi, O Sung Kwon, Jong Chan Hur, Hyuck Man Kwon, Bok Nam Jang
  • Polycarbonate, production method for same and optical film comprising same
    Patent number: 9163115
    Abstract: A polycarbonate of the present invention includes repeating units represented by, Formula 1, Formula 2 and Formula 3, respectively, and thus, may have excellent scratch resistance, chemical resistance and impact property.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: October 20, 2015
    Assignee: Cheil Industries Inc.
    Inventors: Jun Ho Chi, O Sung Kwon, Jong Chan Hur, Hyuck Man Kwon, Chang Heon Lee, Bok Nam Jang
  • Polycarbonate, Production Method for Same and Optical Film Comprising Same
    Publication number: 20150094444
    Abstract: A polycarbonate of the present invention includes repeating units represented by, Formula 1, Formula 2 and Formula 3, respectively, and thus, may have excellent scratch resistance, chemical resistance and impact property.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 2, 2015
    Inventors: Jun Ho Chi, O Sung Kwon, Jong Chan Hur, Hyuck Man Kwon, Chang Heon Lee, Bok Nam Jang
  • Polycarbonate and Method of Preparing the Same
    Publication number: 20150038615
    Abstract: A polycarbonate resin of the present invention is characterized by comprising repeating units represented by Formula 1, Formula 2, Formula 3 and Formula 4, respectively.
    Type: Application
    Filed: December 13, 2011
    Publication date: February 5, 2015
    Applicant: Cheil Industries Inc.
    Inventors: Jun Ho Chi, O Sung Kwon, Jong Chan Hur, Hyuck Man Kwon, Bok Nam Jang
  • Polycarbonate Resin Composition
    Publication number: 20140349119
    Abstract: A polycarbonate resin composition according to the present invention comprises: (A) a polycarbonate; (B) a polycarbonate containing a non-phenyl group; (c) a rubber-modified aromatic vinyl graft copolymer; and (D) an aromatic phosphoric acid ester. The polycarbonate resin composition has superior physical balance by being flame retardant, shock resistant, low temperature shock resistant, and chemical resistant.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 27, 2014
    Inventors: Jong Chan Hur, O Sung Kwon, Jun Ho Chi, Hyuck Man Kwon, Chang Heon Lee
  • Polycarbonate Resin for Film, Method for Preparing the Same and Film Including the Same
    Publication number: 20140186602
    Abstract: A polycarbonate resin includes a repeat unit represented by Formula 1; a repeat unit represented by Formula 2; and a repeat unit represented by Formula 3, wherein the polycarbonate resin has a weight average molecular weight of about 15,000 g/mol to about 60,000 g/mol and a melt index of about 3 g/10 min to about 40 g/10 min.: wherein R1, R2, R3, R4, a, b, c, and d are the same as defined in the specification. The polycarbonate resin for film can exhibit excellent scratch resistance, elongation, chemical resistance and heat resistance, and can be used to prepare a film in roll form without any protective film.
    Type: Application
    Filed: September 13, 2013
    Publication date: July 3, 2014
    Applicant: Cheil Industries Inc.
    Inventors: Jun Ho CHI, O Sung KWON, Jong Chan HUR, Hyuck Man KWON, Dong Geun LEE, Woo Suk CHEI, Bok Nam JANG