Patents by Inventor Jin Ho Choy

Jin Ho Choy 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: 11808711
    Abstract: The present disclosure relates to a colorimetric humidity sensor and a method of preparing the same, and in the colorimetric humidity sensor that is an ultrafast colorimetric humidity sensor including a colorimetric member including humidity-responsive particles configured in a disordered monolayer arrangement on a substrate, the humidity-responsive particles are amorphous, porous, and polydispersed microspheres, and the colorimetric humidity sensor indicates a color change according to humidity upon light irradiation.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: November 7, 2023
    Assignee: EWHA UNIVERSITY—INDUSTRY COLLABORATION FOUNDATION
    Inventors: Jerome Kartham Hyun, Syazwani Mohd Noor, Han-Sol Jang, Jin-Ho Choy
  • Publication number: 20220283096
    Abstract: The present disclosure relates to a colorimetric humidity sensor and a method of preparing the same, and in the colorimetric humidity sensor that is an ultrafast colorimetric humidity sensor including a colorimetric member including humidity-responsive particles configured in a disordered monolayer arrangement on a substrate, the humidity-responsive particles are amorphous, porous, and polydispersed microspheres, and the colorimetric humidity sensor indicates a color change according to humidity upon light irradiation.
    Type: Application
    Filed: May 23, 2022
    Publication date: September 8, 2022
    Inventors: Jerome Kartham HYUN, Syazwani MOHD NOOR, Han-Sol JANG, Jin-Ho CHOY
  • Patent number: 11371945
    Abstract: The present disclosure relates to a colorimetric humidity sensor and a method of preparing the same, and in the colorimetric humidity sensor that is an ultrafast colorimetric humidity sensor including a colorimetric member including humidity-responsive particles configured in a disordered monolayer arrangement on a substrate, the humidity-responsive particles are amorphous, porous, and polydispersed microspheres, and the colorimetric humidity sensor indicates a color change according to humidity upon light irradiation.
    Type: Grant
    Filed: November 20, 2019
    Date of Patent: June 28, 2022
    Assignee: EWHA UNIVERSITY—INDUSTRY COLLABORATION FOUNDATION
    Inventors: Jerome Kartham Hyun, Syazwani Mohd Noor, Han-Sol Jang, Jin-Ho Choy
  • Publication number: 20200166466
    Abstract: The present disclosure relates to a colorimetric humidity sensor and a method of preparing the same, and in the colorimetric humidity sensor that is an ultrafast colorimetric humidity sensor including a colorimetric member including humidity-responsive particles configured in a disordered monolayer arrangement on a substrate, the humidity-responsive particles are amorphous, porous, and polydispersed microspheres, and the colorimetric humidity sensor indicates a color change according to humidity upon light irradiation.
    Type: Application
    Filed: November 20, 2019
    Publication date: May 28, 2020
    Inventors: Jerome Kartham HYUN, Syazwani MOHD NOOR, Han-Sol JANG, Jin-Ho CHOY
  • Patent number: 9017719
    Abstract: Provided is an injectable drug carrier including a non-toxic Layered Double Hydroxide (LDH) and pharmaceutically acceptable excipients. Provided is also a method of preparing the injectable drug carrier, the method including: synthesizing LDH with various compositions and controlling the size and shape of the LDH at a level that the LDH has no adverse effect in vivo. A solution obtained by dispersing the LDH in a solvent is injected in vivo. According to the method, nano-size LDH that does not affect a blood vessel in vivo can be synthesized. The LDH thus synthesized has no adverse effect in vivo even at a concentration of 400 mg/kg, and thus can contribute to establishment of a drug delivery system capable of improving the delivery efficiency of a specific drug.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: April 28, 2015
    Assignee: Nanohybrid Co., Ltd.
    Inventors: Taeun Park, Jin-Ho Choy, Jae-Min Oh, Ji-Sun Jung
  • Publication number: 20120276170
    Abstract: Provided is an injectable drug carrier including a non-toxic Layered Double Hydroxide (LDH) and pharmaceutically acceptable excipients. Provided is also a method of preparing the injectable drug carrier, the method including: synthesizing LDH with various compositions and controlling the size and shape of the LDH at a level that the LDH has no adverse effect in vivo. A solution obtained by dispersing the LDH in a solvent is injected in vivo. According to the method, nano-size LDH that does not affect a blood vessel in vivo can be synthesized. The LDH thus synthesized has no adverse effect in vivo even at a concentration of 400 mg/kg, and thus can contribute to establishment of a drug delivery system capable of improving the delivery efficiency of a specific drug.
    Type: Application
    Filed: July 3, 2012
    Publication date: November 1, 2012
    Applicant: NANOHYBRID CO., LTD.
    Inventors: Taeun PARK, Jin-Ho CHOY, Jae-Min OH, Ji-Sun JUNG
  • Publication number: 20120220647
    Abstract: A nanohybrid of the potent gene therapeutic agent siRNA (small interfering RNA) and a target-specific layered inorganic hydroxide, a preparation method thereof, and a pharmaceutical composition for tumor treatment containing the target-specific, siRNA/layered inorganic hydroxide nanohybrid. The nanohybrid increases the in vivo stability of the siRNA, and a target-specific multifunctional ligand, which is bonded to the layered inorganic hydroxide and can bind specifically to a tumor, increases the efficiency of tumor-specific transfer of the siRNA such that the siRNA shows tumor therapeutic activity even at a relatively low dose. Thus, the nanohybrid will be widely useful for target-specific antitumor therapies.
    Type: Application
    Filed: September 14, 2009
    Publication date: August 30, 2012
    Inventors: Jin-Ho Choy, Dae-Hwan Park, Jaeyong Cho
  • Publication number: 20120156263
    Abstract: The present invention relates to an ursodeoxycholic acid-synthetic hydrotalcite-Eudragit hybrid, a pharmaceutical composition containing the same and a method for preparing the same. The ursodeoxycholic acid-synthetic hydrotalcite-Eudragit hybrid according to the present invention is very useful as an active ingredient of a pharmaceutical composition because of its bitter-taste-blocking effect and improved body absorption rate with high solubility.
    Type: Application
    Filed: September 10, 2010
    Publication date: June 21, 2012
    Applicant: Daewoong Pharmaceutical Co., Ltd.
    Inventors: Jin Ho Choy, Go Eun Choi, Myung Chul Park, Hee Chang
  • Publication number: 20110262666
    Abstract: The present invention relates to a thermal transfer ribbon containing exfoliated layered inorganic nanoparticles or exfoliated layered double hydroxides and a manufacturing method thereof, and more particularly to a sublimation thermal transfer ribbon wherein a second adhesive layer, a transfer ink layer and a transfer protective layer are formed on one surface of a base film having a lubricating heat-resistant layer and a first adhesive layer formed on the other surface thereof, in which the lubricating heat-resistant layer, the transfer ink layer and the transfer protective layer contain exfoliated layered inorganic nanoparticles or exfoliated layered double hydroxide nanoparticles to improve the heat resistance, image uniformity and abrasion resistance of the thermal transfer ribbon.
    Type: Application
    Filed: April 23, 2010
    Publication date: October 27, 2011
    Inventors: Jin Ho Choy, Dae Hwan Park, Won Woo Park, Jae Sang Ryu
  • Publication number: 20110052842
    Abstract: The present invention relates to a receiving sheet for dye-sublimation thermal transfer recording and a method for manufacturing the same, and more particularly to a receiving sheet for dye-sublimation thermal transfer recording, which includes a base layer, a back coating layer formed on one surface of the base layer, and an ink-receiving layer formed on the surface opposite the surface of the base layer on which the back coating layer is formed, the ink-receiving layer containing porous metal oxide nanoparticles, and a method for manufacturing the same. The inventive receiving sheet for dye-sublimation thermal transfer recording includes the ink-receiving layer containing porous metal oxide nanoparticles. Thus, the resolution of images on the receiving sheet can be maintained, while the resistance to thermal deformation and durability of the receiving sheet can be greatly improved, thus offering many advantages in terms of image quality or cost.
    Type: Application
    Filed: April 23, 2010
    Publication date: March 3, 2011
    Inventors: Jin Ho Choy, Dae Hwan Park
  • Publication number: 20100047307
    Abstract: Provided is an injectable drug carrier including a non-toxic Layered Double Hydroxide (LDH) and pharmaceutically acceptable excipients. Provided is also a method of preparing the injectable drug carrier, the method including: synthesizing LDH with various compositions and controlling the size and shape of the LDH at a level that the LDH has no adverse effect in vivo. A solution obtained by dispersing the LDH in a solvent is injected in vivo. According to the method, nano-size LDH that does not affect a blood vessel in vivo can be synthesized. The LDH thus synthesized has no adverse effect in vivo even at a concentration of 400 mg/kg, and thus can contribute to establishment of a drug delivery system capable of improving the delivery efficiency of a specific drug.
    Type: Application
    Filed: June 3, 2005
    Publication date: February 25, 2010
    Applicant: NANOHYBRID CO., LTD.
    Inventors: Taeun Park, Jin-ho Choy, Jae-Min Oh, Ji-Sun Jung
  • Patent number: 7572458
    Abstract: Provided are a boron compound-layered double hydroxide (LDH) nanohybrid in which a boron compound for boron neutron capture therapy is intercalated in between layers of LDH, a method of preparing the boron compound-LDH nanohybrid, and a pharmaceutical composition including the boron compound-LDH nanohybrid, which can be used in boron neutron capture therapy.
    Type: Grant
    Filed: June 11, 2008
    Date of Patent: August 11, 2009
    Assignee: Ewha University-Industry Collaboration Foundation
    Inventors: Jin Ho Choy, Ie Rang Jeon, Soo Jin Choi, Jae Min Oh
  • Publication number: 20090017303
    Abstract: The present invention relates to a method for increasing a photocatalytic activity of zinc oxide, which comprises preparing zinc oxide nanoplate crystals having a planar morphology on their (0001) crystal faces. In addition, the present invention relates to a process for synthesizing zinc oxide nanoplate crystals, a tooth whitening composition and a composition for degrading organic pollutants.
    Type: Application
    Filed: June 12, 2008
    Publication date: January 15, 2009
    Applicant: FAS Alliances, Inc.
    Inventors: Jin Ho CHOY, Tae Un Park, Eue Soon Jang
  • Publication number: 20090004228
    Abstract: Provided are a boron compound-layered double hydroxide (LDH) nanohybrid in which a boron compound for boron neutron capture therapy is intercalated in between layers of LDH, a method of preparing the boron compound-LDH nanohybrid, and a pharmaceutical composition including the boron compound-LDH nanohybrid, which can be used in boron neutron capture therapy.
    Type: Application
    Filed: June 11, 2008
    Publication date: January 1, 2009
    Applicant: EWHA UNIVERSITY-INDUSTRY COLLABORATION FOUNDATION
    Inventors: Jin Ho CHOY, Ie Rang JEON, Soo Jin CHOI, Jae Min OH
  • Publication number: 20080268431
    Abstract: The present invention provides a molecular level of DNA information code which uses a base pair sequence as an information code unit. Also, the present invention provides a molecular code system which includes designing and coding DNA which is an information code unit; stabilizing the DNA information code by encapsulating it with an inorganic capsule and coating the DNA-inorganic capsule to a medium; taking and extracting the coated DNA information code which is present in a trace amount, collecting the DNA information code using a polypyrrole-maghemite nanohybrid; and amplifying the collected DNA information code using a polymerase chain reaction and reading the amplified DNA information code. According to the present invention, the DNA information code having high security is prepared by assigning a security unit to a DNA which has an excellent accumulating capacity, and then the DNA information code is stabilized so as to be coated to a medium.
    Type: Application
    Filed: September 14, 2004
    Publication date: October 30, 2008
    Inventors: Jin-Ho Choy, Man Park, Jae-Min Oh
  • Publication number: 20080153907
    Abstract: Provided is a pharmaceutical composition for the treatment of liver cancer, including a layered metal hydroxide-retinoic acid (LMH-RA) hybrid as a novel drug delivery system which shows few side effects of retinoic acid, good drug stability, sustained drug release, and improved drug delivery efficiency.
    Type: Application
    Filed: February 22, 2006
    Publication date: June 26, 2008
    Applicant: NANOHYBRID CO., LTD.
    Inventors: Jin-ho Choy, Taeun Park, Sang-tae Kim, You-hwan Son
  • Publication number: 20080119519
    Abstract: Provided are a hybrid of a poorly soluble basic drug and a layered silicate, including a water-soluble basic polymer, and a method of preparing the same. The water-soluble basic polymer may be an aminoalkylmethacrylate copolymer (e.g., Eudragit E 100: a copolymer composed of 1:2:1 ratio of butyl methacrylate, (2,2-dimethylaminoethyl)methacrylate, and methyl methacrylate, Degussa) or polyvinylacetal diethylaminoacetate (AEA). In an oral formulation including the hybrid, a short-term dissolution of the poorly soluble drug can be increased to 90%, thereby increasing drug bioavailability.
    Type: Application
    Filed: February 21, 2006
    Publication date: May 22, 2008
    Applicant: NANOHYBRID CO., LTD.
    Inventors: Jin-Ho Choy, Taeun Park, Yoon-joo Lee, Dong-Youn Kim, Jin-Kuen Park
  • Patent number: 7288318
    Abstract: The present invention provides a hybrid material comprised of an active component for raw materials for cosmetics and a layered metal hydroxide, showing good stability, low toxicity, low irritation, good sustained release and good dispersibility. The present invention provides a method for preparing the hybrid material, using the coprecipitation method, the ion-exchange method or the adsorption method, depending on properties of the active component for raw materials for cosmetics. The method may further comprise a step of coating the surface of the hybrid material after preparation of the hybrid material. The present invention provides cosmectics comprising the above hybrid material.
    Type: Grant
    Filed: July 26, 2002
    Date of Patent: October 30, 2007
    Assignee: Nanohybrid Co., Ltd.
    Inventors: Jin Ho Choy, Yang Su Han, Sung Ho Hwang, Chi Won Lee, Jae Hun Yang, Sun Young Lee
  • Patent number: 6794337
    Abstract: The present invention relates to a superconducting colloid prepared by an exfoliating multi-layered superconductor, represented by the formula Bi2Sr2Cam−1CumO2m+4+&dgr; (wherein, m is 1, 2 or 3 and &dgr; is a positive number greater than 0 and less than 1) in which a mercuric halide-organic complex is intercalated, a process thereof, a superconducting thin layer prepared using the above superconducting colloid, and a process thereof.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: September 21, 2004
    Inventors: Jin Ho Choy, Soon Jae Kwon, Eui Soon Chang
  • Publication number: 20040171735
    Abstract: The present invention provides a hybrid material comprised of an active component for raw materials for cosmetics and a layered metal hydroxide, showing good stability, low toxicity, low irritation, good sustained release and good dispersibility. The present invention provides a method for preparing the hybrid material, using the coprecipitation method, the ion-exchange method or the adsorption method, depending on properties of the active component for raw materials for cosmetics. The method may further comprise a step of coating the surface of the hybrid material after preparation of the hybrid material. The present invention provides cosmectics comprising the above hybrid material.
    Type: Application
    Filed: January 26, 2004
    Publication date: September 2, 2004
    Inventors: Jin Ho Choy, Yang Su Han, Sung Ho Hwang, Chi Won Lee, Jae Hun Yang, Sun Young Lee