Patents by Inventor Sungha Chang

Sungha Chang 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).

  • Control method of automatic balancing centrifuge using balancer
    Patent number: 8292793
    Abstract: The present invention relates to a control method of a centrifuge using balancer wherein a balancer containing balls, a liquid, or both balls and a liquid are provided, thereby helping the rotor rotate more stably. More particularly, the centrifuge comprises a motor, a rotational shaft of the motor projected from said motor, a rotor, a main body, and a balancer which contains compensation material in a balancing space formed by a cover that is coupled to said main body, wherein the balancing for the unbalance due to the loaded samples is executed more accurately and stably.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: October 23, 2012
    Assignee: Hanlab Corporation
    Inventors: Heuigeun Ryu, Jong-Mok Lee, Sungha Chang
  • Automatic balancing centrifuge using balancer
    Patent number: 7942801
    Abstract: The present invention relates to a centrifuge including a balancer which contains balls and liquid and enables a rotor to rotate steadily. More concretely, the centrifuge comprises a motor, a motor shaft protruded from the motor, a rotor, and a balancer which includes a space constructed with a balancer body and a cover unit combining with the balancer body and formed to contain balls and liquid.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: May 17, 2011
    Assignee: Hanlab Corporation
    Inventors: Heuigeun Ryu, Ohhun Kwon, Sungha Chang
  • CONTROL METHOD OF AUTOMATIC BALANCING CENTRIFUGE USING BALANCER
    Publication number: 20100069216
    Abstract: The present invention relates to a control method of a centrifuge using balancer wherein a balancer containing balls, a liquid, or both balls and a liquid are provided, thereby helping the rotor rotate more stably. More particularly, the centrifuge comprises a motor, a rotational shaft of the motor projected from said motor, a rotor, a main body, and a balancer which contains compensation material in a balancing space formed by a cover that is coupled to said main body, wherein the balancing for the unbalance due to the loaded samples is executed more accurately and stably.
    Type: Application
    Filed: July 31, 2009
    Publication date: March 18, 2010
    Applicant: HANLAB CORPORATION
    Inventors: Heuigeun Ryu, Ohhun Kwon, Sungha Chang
  • AUTOMATIC BALANCING CENTRIFUGE USING BALANCER
    Publication number: 20100009835
    Abstract: The present invention relates to a centrifuge including a balancer which contains balls and liquid and enables a rotor to rotate steadily. More concretely, the centrifuge comprises a motor, a motor shaft protruded from the motor, a rotor, and a balancer which includes a space constructed with a balancer body and a cover unit combining with the balancer body and formed to contain balls and liquid.
    Type: Application
    Filed: September 2, 2008
    Publication date: January 14, 2010
    Applicant: HANLAB CORPORATION
    Inventors: Heuigeun RYU, Ohhun KWON, Sungha CHANG