Patents by Inventor Chang Ho Yang

Chang Ho Yang 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: 11957741
    Abstract: The invention relates to the use of an animal-protein-free botulinum toxin composition to treat a disease, disorder or condition in a patient in need thereof whereby the animal-protein-free botulinum toxin composition exhibits a longer lasting effect in the patient compared to an animal-protein-containing botulinum toxin composition.
    Type: Grant
    Filed: January 17, 2023
    Date of Patent: April 16, 2024
    Assignee: MEDY-TOX, INC.
    Inventors: Hyun Ho Jung, Gi Hyeok Yang, Hyun Jee Kim, Chang Hoon Rhee
  • Patent number: 9074499
    Abstract: A multiple variable valve lift apparatus may include a camshaft, a plurality of cams slidably fitted on the camshaft and each having a cam base with a guide groove and a cam lobe, a solenoid valve including an actuating rod capable of being selectively inserted into the guide groove of a cam in the plurality of cams, and a valve opening/closing unit capable of selectively coming in contact with any cam in the plurality of cams.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: July 7, 2015
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Soo Hyung Woo, Chang Ho Yang, Young Hong Kwak, Byong Young Choi, Jin Kook Kong, Gee Wook Shin
  • Publication number: 20140165940
    Abstract: A multiple variable valve lift apparatus may include a camshaft, a plurality of cams slidably fitted on the camshaft and each having a cam base with a guide groove and a cam lobe, a solenoid valve including an actuating rod capable of being selectively inserted into the guide groove of a cam in the plurality of cams, and a valve opening/closing unit capable of selectively coming in contact with any cam in the plurality of cams.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 19, 2014
    Applicant: Hyundai Motor Company
    Inventors: Soo Hyung WOO, Chang Ho YANG, Young Hong KWAK, Byong Young CHOI, Jin Kook KONG, Gee Wook SHIN
  • Patent number: 8726861
    Abstract: A variable valve lift apparatus may include a camshaft, a low lift cam which may be connected to the camshaft and rotates, a high lift cam which may be rotatably mounted to the camshaft and may be selectively connected to the camshaft to rotate with the camshaft, a high lift cam connecting portion which selectively connects the high lift cam to the camshaft, and a tappet including a low lift cam contact portion contacting the low lift cam and a high lift cam contact portion selectively activating the high lift cam.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: May 20, 2014
    Assignee: Hyundai Motor Company
    Inventors: Byong Young Choi, Jin Kook Kong, Soo Hyung Woo, Young Hong Kwak, Gee Wook Shin, Jei Choon Yang, Chang Ho Yang
  • Patent number: 8573168
    Abstract: A hydraulic pressure valve apparatus includes a housing of which a first chamber and a second chamber are formed therein, wherein a diameter of the second chamber is bigger than that of the first chamber, a first piston disposed within the first chamber, an elastic portion disposed within the first chamber for elastically supporting the first piston and a second piston disposed within the second chamber and connected to a valve.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: November 5, 2013
    Assignee: Hyundai Motor Company
    Inventors: Jei Choon Yang, Chang Ho Yang, Byong Young Choi, Young Hong Kwak, Jin Kook Kong, Soo Hyung Woo
  • Patent number: 8555829
    Abstract: A variable compression ratio apparatus for an engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft, and for changing compression ratio of the air-fuel mixture.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: October 15, 2013
    Assignee: Hyundai Motor Company
    Inventors: Dong Seok Lee, Jei Choon Yang, Chang Ho Yang, Eun Ho Lee, Yoonsik Woo, Jin Kook Kong, Soo Hyung Woo
  • Publication number: 20120280162
    Abstract: A hydraulic pressure valve apparatus includes a housing of which a first chamber and a second chamber are formed therein, wherein a diameter of the second chamber is bigger than that of the first chamber, a first piston disposed within the first chamber, an elastic portion disposed within the first chamber for elastically supporting the first piston and a second piston disposed within the second chamber and connected to a valve.
    Type: Application
    Filed: December 8, 2011
    Publication date: November 8, 2012
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jei Choon YANG, Chang Ho Yang, Byong Young Choi, Young Hong Kwak, Jin Kook Kong, Soo Hyung Woo
  • Publication number: 20120125297
    Abstract: A variable compression ratio apparatus for an engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft, and for changing compression ratio of the air-fuel mixture.
    Type: Application
    Filed: July 14, 2011
    Publication date: May 24, 2012
    Applicant: Hyundai Motor Company
    Inventors: Dong Seok Lee, Jei Choon Yang, Chang Ho Yang, Eun Ho Lee, Yoonsik Woo, Jin Kook Kong, Soo Hyung Woo
  • Publication number: 20120079999
    Abstract: A variable valve lift apparatus including an inner tappet, an outer tappet surrounding and slidably contacting the inner tappet, and a latching pin slidably inserted into the inner tappet so as to implement a high lift and a low lift by selectively joining the inner tappet and the outer tappet may include a stopper partially inserted into the outer tappet and spaced apart from the latching pin in a movement direction of the latching pin so as to limit movement of the latching pin, and forming a latching pin joining groove in the outer tappet to selectively receive the latching pin, wherein the stopper partially projects to the outside of the outer tappet and is slidably engaged to a cylinder head groove formed to a cylinder head bore to prevent the variable valve lift apparatus from being rotated.
    Type: Application
    Filed: June 24, 2011
    Publication date: April 5, 2012
    Applicants: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Chang Ho Yang, Byong Young Choi, Gee Wook Shin, Yoonsick Woo, Jin Kook Kong, Soo Hyung Woo
  • Publication number: 20120048219
    Abstract: A variable valve lift apparatus may include a camshaft, a low lift cam which may be connected to the camshaft and rotates, a high lift cam which may be rotatably mounted to the camshaft and may be selectively connected to the camshaft to rotate with the camshaft, a high lift cam connecting portion which selectively connects the high lift cam to the camshaft, and a tappet including a low lift cam contact portion contacting the low lift cam and a high lift cam contact portion selectively activating the high lift cam.
    Type: Application
    Filed: November 17, 2010
    Publication date: March 1, 2012
    Applicant: Hyundai Motor Company
    Inventors: Byong Young Choi, Jin Kook Kong, Soo Hyung Woo, Young Hong Kwak, Gee Wook Shin, Jei Choon Yang, Chang Ho Yang