Patents by Inventor Do Woong HONG

Do Woong HONG 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: 10590272
    Abstract: The present invention related to a thermosetting resin composition for high frequency, the composition containing (a) a polyphenylene ether having two or more unsaturated substituent groups selected from the group consisting of the vinyl group and the allyl group at both ends of the molecular chain thereof, or an oligomer of said polyphenylene ether; (b) three or more different types of cross-linking curing agents; and (c) a flame retardant. The present invention may provide a printed circuit board for high frequency which simultaneously exhibits low dielectric loss characteristic and good moisture-absorption heat resistance, low thermal expansion characteristics, excellent thermal stability, excellent processability, and the like.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: March 17, 2020
    Assignee: DOOSAN CORPORATION
    Inventors: Dong Hee Jung, Jeong Don Kwon, Moo Hyun Kim, Do Woong Hong
  • Patent number: 10584239
    Abstract: A thermosetting resin composition for use with high frequencies is provided. The composition includes: (a) a polyphenylene ether having two or more unsaturated substituent groups selected from the group consisting of the vinyl group and the allyl group at both ends of the molecular chain thereof, or an oligomer of said polyphenylene ether; (b) three or more different types of cross-linking curing agents; and (c) a flame retardant. It is possible to provide a printed circuit board for use with high frequencies which simultaneously exhibits, inter alia, an outstanding low dielectric loss characteristic and good moisture-absorption heat resistance, low thermal expansion characteristics, thermal stability and outstanding working properties.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: March 10, 2020
    Assignee: DOOSAN CORPORATION
    Inventors: Dong Hee Jung, Jeong Don Kwon, Moo Hyun Kim, Do Woong Hong
  • Publication number: 20190284393
    Abstract: A thermosetting resin composition for use with high frequencies is provided. The composition includes: (a) a polyphenylene ether having two or more unsaturated substituent groups selected from the group consisting of the vinyl group and the allyl group at both ends of the molecular chain thereof, or an oligomer of said polyphenylene ether; (b) three or more different types of cross-linking curing agents; and (c) a flame retardant. It is possible to provide a printed circuit board for use with high frequencies which simultaneously exhibits, inter alia, an outstanding low dielectric loss characteristic and good moisture-absorption heat resistance, low thermal expansion characteristics, thermal stability and outstanding working properties.
    Type: Application
    Filed: May 28, 2019
    Publication date: September 19, 2019
    Applicant: DOOSAN CORPORATION
    Inventors: Dong Hee JUNG, Jeong Don KWON, Moo Hyun KIM, Do Woong HONG
  • Patent number: 9957389
    Abstract: The present disclosure provides: a thermosetting resin composition comprising: (a) bisphenol M-type epoxy resin; (b) bisphenol M-type cyanate ester resin; (c) polyphenylene ether having two or more vinyl groups at both ends of a branched chain, or oligomers thereof; and (d) a cross-linking curing agent, a prepreg comprising the composition, and a printed circuit board. The printed circuit board simultaneously has an excellent low dielectric loss characteristic, a great moisture-absorbing and heat-resistant characteristic, a low thermal expansion characteristic, thermal stability and the like.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: May 1, 2018
    Assignee: DOOSAN CORPORATION
    Inventors: Dong Hee Jung, Duk Sang Han, Jeong Don Kwon, Moo Hyun Kim, Do Woong Hong
  • Publication number: 20170342264
    Abstract: The present invention related to a thermosetting resin composition for high frequency, the composition containing (a) a polyphenylene ether having two or more unsaturated substituent groups selected from the group consisting of the vinyl group and the allyl group at both ends of the molecular chain thereof, or an oligomer of said polyphenylene ether; (b) three or more different types of cross-linking curing agents; and (c) a flame retardant. The present invention may provide a printed circuit board for high frequency which simultaneously exhibits low dielectric loss characteristic and good moisture-absorption heat resistance, low thermal expansion characteristics, excellent thermal stability, excellent processability, and the like.
    Type: Application
    Filed: December 21, 2015
    Publication date: November 30, 2017
    Applicant: DOOSAN CORPORATION
    Inventors: Dong Hee JUNG, Jeong Don KWON, Moo Hyun KIM, Do Woong HONG
  • Publication number: 20160297967
    Abstract: The present disclosure provides: a thermosetting resin composition comprising: (a) bisphenol M-type epoxy resin; (b) bisphenol M-type cyanate ester resin; (c) polyphenylene ether having two or more vinyl groups at both ends of a branched chain, or oligomers thereof; and (d) a cross-linking curing agent, a prepreg comprising the composition, and a printed circuit board. The printed circuit board simultaneously has an excellent low dielectric loss characteristic, a great moisture-absorbing and heat-resistant characteristic, a low thermal expansion characteristic, thermal stability and the like.
    Type: Application
    Filed: November 25, 2014
    Publication date: October 13, 2016
    Applicant: DOOSAN CORPORATION
    Inventors: Dong Hee JUNG, Duk Sang HAN, Jeong Don KWON, Moo Hyun KIM, Do Woong HONG