Patents by Inventor Doo-Shin Kwak

Doo-Shin Kwak 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).

  • Device for adjusting the heat-generating time of a thermal printer head
    Patent number: 5191355
    Abstract: There is disclosed a device for flexibly adjusting the strobe pulse width corresponding to the heat-generating resistance grade of a thermal printer head through a DIP switch. The DIP switch generates a number of states of voltages corresponding to the grade number of the heat-generating resistance of the thermal printer head. The DIP switch keeps voltage suited for the heat-generating resistance grade of the thermal printer head to supply it to a CPU.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: March 2, 1993
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Doo-Shin Kwak