Patents by Inventor Hojin Choi

Hojin 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).

  • REFRIGERATOR
    Publication number: 20130014533
    Abstract: A refrigerator is provided. The refrigerator may include a refrigerator body having at least one storage compartment and an opening, and a main door for opening and closing the storage compartment, the main door also having an opening corresponding to a receiving compartment formed therein. A sub door may be provided to open and close the opening of the main door, and a gasket may be provided along an edge of a rear surface of the sub door to contact a front surface of the main door and seal an interior of the main door when the sub door is closed. A heat transfer member may extend from the inside of a side to the inside of a front surface of the main door.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 17, 2013
    Inventors: Hojin CHOI, Seokhoon KANG, Seongjin KIM, Youngnam KIM, Sanghu PARK
  • DOUBLE SIDED ACRYLIC ADHESIVE TAPES AND THEIR USAGE
    Publication number: 20080160242
    Abstract: The present disclosure provides a double sided acrylic foam tape having a base layer and a double sided acrylic foam tape using the same, for mobile phone use. Specifically, the present disclosure provides a double sided acrylic foam tape, comprising: an acrylic foam layer with a certain thickness; a base layer formed on either side of the acrylic foam layer; a pressure sensitive adhesive layer formed on one side of the base layer; and a release film formed on the pressure sensitive adhesive layer.
    Type: Application
    Filed: July 27, 2007
    Publication date: July 3, 2008
    Applicant: SCAPA TAPES NORTH AMERICA
    Inventor: HOJIN CHOI
  • Process for preparing 2,7-dimethyl-2,4,6-octatriene-1,8-dial
    Patent number: 6403838
    Abstract: A process for making 2,7-dimethyl-2,4,6-octatrien-1,8-dial starting form an allylic halide is described. The process steps include aldehyde protection, conversion to a sulfide, oxidation to an allylic sulfone followed by a Ramberg-Backlund reaction and hydrolysis.
    Type: Grant
    Filed: September 27, 2001
    Date of Patent: June 11, 2002
    Inventors: Sangho Koo, Hojin Choi, Minsoo Park, Minkoo Ji
  • Process for preparing 2,7-dimethyl-2,4,6-octatriene-1,8-dial
    Publication number: 20020026082
    Abstract: Intermediates useful in the synthesis of a compound having polyene chain structure, processes for preparing the same, and a process for preparing &bgr;-carotene utilizing the same are disclosed. Also disclosed is a novel compound, retinyl sulfide, which was synthesized by the coupling of a diallylic sulfide of the present invention with the corresponding Wittig salt.
    Type: Application
    Filed: September 27, 2001
    Publication date: February 28, 2002
    Applicant: Sangho Koo
    Inventors: Sangho Koo, Hojin Choi, Minsoo Park, Minkoo Ji
  • Diallylic sulfides and processes for preparing the same
    Patent number: 6326519
    Abstract: Diallylic sulfides represented by Formula I wherein: R1 and R2 are independently chosen from the group consisting of —CHO, —CH2Cl, —CH2Br, —CH2I, —CH2OH, CH2OSO2CF3, —CH2OSO2Ph, —CH2OSO2C6H4CH3 and —CH2OSO2CH3 and processes for making the same.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: December 4, 2001
    Inventors: Sangho Koo, Hojin Choi, Minsoo Park, Minkoo Ji
  • Process for making &bgr;-carotene
    Patent number: 6297416
    Abstract: A process for preparing &bgr;-carotene, represented by Formula 3 staring from a sulfone compound of Formula B
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: October 2, 2001
    Inventors: Sangho Koo, Hojin Choi, Minsoo Park, Minkoo Ji