Patents by Inventor Seong-jib Choi

Seong-jib Choi 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).

  • Method for producing tetraalkoxysilane
    Patent number: 11028106
    Abstract: An object of the present invention is to provide a method capable of producing a tetraalkoxysilane with a high energy efficiency and with a high yield. The present invention provides a method for producing a tetraalkoxysilane, the method including: a first step of reacting an alcohol with a silicon oxide; and a second step of bringing a vaporized component of the reaction mixture obtained in the first step into contact with a molecular sieve.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: June 8, 2021
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Norihisa Fukaya, Seong-Jib Choi, Jun-Chul Choi, Toshio Horikoshi, Sho Kataoka, Thuy Nguyen, Kazuhiko Sato, Minoru Hasegawa, Hiroshi Kumai
  • METHOD FOR PRODUCING TETRAALKOXYSILANE
    Publication number: 20200347082
    Abstract: An object of the present invention is to provide a method capable of producing a tetraalkoxysilane with a high energy efficiency and with a high yield. The present invention provides a method for producing a tetraalkoxysilane, the method including: a first step of reacting an alcohol with a silicon oxide; and a second step of bringing a vaporized component of the reaction mixture obtained in the first step into contact with a molecular sieve.
    Type: Application
    Filed: December 25, 2018
    Publication date: November 5, 2020
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Norihisa FUKAYA, Seong-Jib CHOI, Jun-Chul CHOI, Toshio HORIKOSHI, Sho KATAOKA, Thuy NGUYEN, Kazuhiko SATO, Minoru HASEGAWA, Hiroshi KUMAI
  • Method for producing tetraalkoxysilane
    Patent number: 10000514
    Abstract: An object of the present invention is to provide a method for producing tetraalkoxysilane while saving energy at a high yield. Tetraalkoxysilane can be produced while saving energy at a high yield by the method including a first step of reacting alcohol with carbon dioxide in the presence of a dehydrating agent and/or in a reactor provided with a dehydrating means, and a second step of reacting a reaction mixture obtained in the first step with silicon oxide.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: June 19, 2018
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Norihisa Fukaya, Seong-Jib Choi, Jun-Chul Choi, Toshio Horikoshi, Kazuhiko Sato, Hiroyuki Yasuda
  • Method for Producing Tetraalkoxysilane
    Publication number: 20170267701
    Abstract: An object of the present invention is to provide a method for producing tetraalkoxysilane while saving energy at a high yield. Tetraalkoxysilane can be produced while saving energy at a high yield by the method including a first step of reacting alcohol with carbon dioxide in the presence of a dehydrating agent and/or in a reactor provided with a dehydrating means, and a second step of reacting a reaction mixture obtained in the first step with silicon oxide.
    Type: Application
    Filed: April 30, 2015
    Publication date: September 21, 2017
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Norihisa Fukaya, Seong-Jib Choi, Jun-Chul Choi, Toshio Horikoshi, Kazuhiko Sato, Hiroyuki Yasuda
  • AROMATIC HETEROCYCLIC COMPOUND, ORGANIC LIGHT EMITTING DIODE COMPRISING ORGANIC LAYER COMPRISING THE SAME AND METHOD OF MANUFACTURING THE ORGANIC LIGHT EMITTING DIODE
    Publication number: 20090230857
    Abstract: Provided are an aromatic heterocyclic compound represented by Formula 1 below, an organic light emitting diode including the same, and a method of manufacturing the organic light emitting diode: wherein descriptions of Formula 1 are the same as defined in the detailed description of the invention.
    Type: Application
    Filed: March 13, 2009
    Publication date: September 17, 2009
    Inventors: Byoung-ki Choi, O-hyun Kwon, Myeong-suk Kim, Dong-woo Shin, Yu-ri Choi, Duk-keun An, Seong-jib Choi