Patents by Inventor Dong-Chul Pyun

Dong-Chul Pyun 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: 9306218
    Abstract: The present invention relates generally to high sulfur content polymeric materials and composites, methods for making them, and devices using them such as electrochemical cells and optical elements. In one aspect, a polymeric composition comprising a copolymer of sulfur, at a level in the range of at least about 50 wt % of the copolymer, and one or more monomers each selected from the group consisting of ethylenically unsaturated monomers, epoxide monomers, and thiirane monomers, at a level in the range of about 0.1 wt % to about 50 wt % of the copolymer.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: April 5, 2016
    Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
    Inventors: Dong-Chul Pyun, Jared J. Griebel, Woo Jin Chung, Richard Glass, Robert A. Norwood, Roland Himmelhuber, Adam G. Simmonds
  • Patent number: 8932668
    Abstract: A metallic magnetic powder where a primary particle of each metallic magnetic particle is a powder without forming an aggregate, and a method of making the same that includes manufacturing a metallic magnetic powder constituted of metallic magnetic particles, containing a metallic magnetic phase, with Fe, or Fe and Co as main components, rare earth elements, or yttrium and one or more non-magnetic components removing the non-magnetic component from the metallic magnetic with a reducing agent, while making a complexing agent exist for forming a complex with the non-magnetic component in water; oxidizing the metallic magnetic particle with the non-magnetic component removed; substituting water adhered to the oxidized metallic magnetic particle with an organic solvent; and coating the surface of the metallic magnetic particle with an organic matter different from the organic solvent, while maintaining a wet condition of the metallic magnetic particle with the organic solvent adhered thereto.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: January 13, 2015
    Assignees: The Arizona Board of Regents on Behalf of The University of Arizona, Materials Co., Ltd.
    Inventors: Dong Chul Pyun, Heemin Yoo, Hirohisa Omoto, Takayuki Yoshida
  • Publication number: 20140356642
    Abstract: A metallic magnetic powder where a primary particle of each metallic magnetic particle is a powder without forming an aggregate, and a method of making the same that includes manufacturing a metallic magnetic powder constituted of metallic magnetic particles, containing a metallic magnetic phase, with Fe, or Fe and Co as main components, rare earth elements or yttrium and one or more non-magnetic components removing the non-magnetic component from the metallic magnetic with a reducing agent, while making a complexing agent exist for forming a complex with the non-magnetic component in water; oxidizing the metallic magnetic particle with the non-magnetic component removed; substituting water adhered to the oxidized metallic magnetic particle with an organic solvent; and coating the surface of the metallic magnetic particle with an organic matter different from the organic solvent, while maintaining a wet condition of the metallic magnetic particle with the organic solvent adhered thereto.
    Type: Application
    Filed: August 15, 2014
    Publication date: December 4, 2014
    Applicants: THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA, DOWA ELECTRONICS MATERIALS CO., LTD.
    Inventors: Dong Chul PYUN, Heemin YOO, Hirohisa OMOTO, Takayuki YOSHIDA
  • Publication number: 20140199592
    Abstract: The present invention relates generally to high sulfur content polymeric materials and composites, methods for making them, and devices using them such as electrochemical cells and optical elements. In one aspect, a polymeric composition comprising a copolymer of sulfur, at a level in the range of at least about 50 wt % of the copolymer, and one or more monomers each selected from the group consisting of ethylenically unsaturated monomers, epoxide monomers, and thiirane monomers, at a level in the range of about 0.1 wt % to about 50 wt % of the copolymer.
    Type: Application
    Filed: August 13, 2012
    Publication date: July 17, 2014
    Applicant: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSI OF ARIZONA
    Inventors: Dong-Chul Pyun, Jared J. Griebel, Woo Jin Chung, Richard Glass, Robert A. Norwood, Roland Himmelhuber, Adam. G. Simmonos
  • Publication number: 20130277600
    Abstract: Encapsulated particles and methods for manufacturing encapsulated particles and structures are described. Such particles may have a length no greater than 40 nm, and include at least one material selected from the group consisting of ferromagnetic materials and ferrimagnetic materials. A polymeric encapsulant surrounds the particle, the polymeric encapsulant including a phase-separated block copolymer including a glassy first phase and a rubbery second phase, the glassy first phase positioned between the particle and the second rubbery phase. The glassy first phase includes a hydrophobic copolymer having a glass transition temperature of at least 50° C. The rubbery second phase includes a polymer having at least one of (i) a glass transition temperature of no greater than 30° C., and (ii) a tan delta peak maximum of no greater than 30° C. Other embodiments are described and claimed.
    Type: Application
    Filed: June 17, 2013
    Publication date: October 24, 2013
    Inventors: Richard L. Bradshaw, Dong-Chul Pyun
  • Patent number: 8465855
    Abstract: Encapsulated particles and methods for manufacturing encapsulated particles and structures are described. Such particles may have a length no greater than 40 nm, and include at least one material selected from the group consisting of ferromagnetic materials and ferrimagnetic materials. A polymeric encapsulant surrounds the particle, the polymeric encapsulant including a phase-separated block copolymer including a glassy first phase and a rubbery second phase, the glassy first phase positioned between the particle and the second rubbery phase. The glassy first phase includes a hydrophobic copolymer having a glass transition temperature of at least 50° C. The rubbery second phase includes a polymer having at least one of (i) a glass transition temperature of no greater than 30° C., and (ii) a tan delta peak maximum of no greater than 30° C. Other embodiments are described and claimed.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: June 18, 2013
    Assignees: International Business Machines Corporation, Arizona Board of Regents on Behalf The University of Arizona
    Inventors: Richard Lionel Bradshaw, Dong-Chul Pyun
  • Publication number: 20110305924
    Abstract: A metallic magnetic powder where a primary particle of each metallic magnetic particle is a powder without forming an aggregate, and a method of making the same that includes manufacturing a metallic magnetic powder constituted of metallic magnetic particles, containing a metallic magnetic phase, with Fe, or Fe and Co as main components, rare earth elements , or yttrium and one or more non-magnetic components removing the non-magnetic component from the metallic magnetic with a reducing agent, while making a complexing agent exist for forming a complex with the non-magnetic component in water; oxidizing the metallic magnetic particle with the non-magnetic component removed; substituting water adhered to the oxidized metallic magnetic particle with an organic solvent; and coating the surface of the metallic magnetic particle with an organic matter different from the organic solvent, while maintaining a wet condition of the metallic magnetic particle with the organic solvent adhered thereto.
    Type: Application
    Filed: May 9, 2011
    Publication date: December 15, 2011
    Applicants: DOWA ELECTRONICS MATERIALS CO., LTD., THE ARIZONA BOARD OF REGENTS
    Inventors: Dong Chul PYUN, Heemin YOO, Hirohisa OMOTO, Takayuki YOSHIDA
  • Publication number: 20100015472
    Abstract: Encapsulated particles and methods for manufacturing encapsulated particles and structures are described. Such particles may have a length no greater than 40 nm, and include at least one material selected from the group consisting of ferromagnetic materials and ferrimagnetic materials. A polymeric encapsulant surrounds the particle, the polymeric encapsulant including a phase-separated block copolymer including a glassy first phase and a rubbery second phase, the glassy first phase positioned between the particle and the second rubbery phase. The glassy first phase includes a hydrophobic copolymer having a glass transition temperature of at least 50° C. The rubbery second phase includes a polymer having at least one of (i) a glass transition temperature of no greater than 30° C., and (ii) a tan delta peak maximum of no greater than 30° C. Other embodiments are described and claimed.
    Type: Application
    Filed: July 16, 2008
    Publication date: January 21, 2010
    Inventors: Richard Lionel Bradshaw, Dong-Chul Pyun