Patents by Inventor Joo-Seung CHAE

Joo-Seung CHAE 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).

  • CATALYST-SUPPORTED ORGANIC-INORGANIC HYBRID COMPOSITE PARTICLES CAPABLE OF REGULATING POLYURETHANE REACTION RATE, AND PREPARATION METHOD THEREFOR
    Publication number: 20220118433
    Abstract: The present invention relates to a catalyst-supporting organic-inorganic hybrid composite particle, and more particularly, to a technique of adjusting a desired pot life and curing speed by preparing a catalyst-supporting organic-inorganic hybrid composite particle by adding a catalyst for polyurethane reaction to a catalyst-supporting particle prepared by stirring an alkoxy silane-functionalized polyurethane precursor and the tetraethyl orthosilicate for a certain period of time and mixing them, and adjusting an initiation rate for polyurethane polymerization through the prepared catalyst-supporting organic-inorganic hybrid composite particle.
    Type: Application
    Filed: February 7, 2020
    Publication date: April 21, 2022
    Inventors: Min-Gu HAN, Keun-Deuk LEE, Ki-Bong LEE, Joo-Seung CHAE, Ha-neul PARK, Ju-Young KIM, Ho-Young JUNG, Na-Hye KIM
  • Recrystallization method of fine spherical RDX particle
    Patent number: 8729261
    Abstract: The present invention relates to a method for recrystallizing fine spherical cyclotrimethylenetrinitramine (Research Department Explosive, hereinafter, referred to as “RDX”) particles, and the method for recrystallizing fine spherical RDX particles according to the present invention may include (a) introducing a powder material containing RDX into a container, (b) introducing a dimethylether compressed gas into the container and dissolving the RDX to form a RDX solution, (c) releasing and decompressing the RDX solution into atmospheric pressure to form crystallized RDX particles, and (d) separating and collecting the RDX particles.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: May 20, 2014
    Assignee: Agency for Defense Development
    Inventors: Byoung-Min Lee, Youn-Woo Lee, Hyoun-Soo Kim, Joo-Seung Chae
  • RECRYSTALLIZATION METHOD OF FINE SPHERICAL RDX PARTICLE
    Publication number: 20120276385
    Abstract: The present invention relates to a method for recrystallizing fine spherical cyclotrimethylenetrinitramine (Research Department Explosive, hereinafter, referred to as “RDX”) particles, and the method for recrystallizing fine spherical RDX particles according to the present invention may include (a) introducing a powder material containing RDX into a container, (b) introducing a dimethylether compressed gas into the container and dissolving the RDX to form a RDX solution, (c) releasing and decompressing the RDX solution into atmospheric pressure to form crystallized RDX particles, and (d) separating and collecting the RDX particles.
    Type: Application
    Filed: October 26, 2011
    Publication date: November 1, 2012
    Applicant: AGENCY FOR DEFENSE DEVELOPMENT
    Inventors: Byoung-Min LEE, Youn-Woo LEE, Hyoun-Soo KIM, Joo-Seung CHAE