Patents by Inventor Chan-Sok Park

Chan-Sok Park 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).

  • Voltage pumping circuit for semiconductor memory devices
    Patent number: 5367489
    Abstract: A high density semiconductor device is provided with an improved voltage pumping (bootstrapping) circuit. The voltage pumping circuit generates at an initial power-up state a first output voltage which is substantially identical to the memory device source supply voltage. The pumping circuit then pumps the first output voltage up to a second output voltage which is higher than the first output voltage. The pumping operation is achieved prior to or upon the semiconductor memory device being enabled in response to a series of pulses output from an oscillator.
    Type: Grant
    Filed: November 9, 1992
    Date of Patent: November 22, 1994
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chan-Sok Park, Young-Gwon Choi, Dong-Jae Lee, Do-Chan Choi, Dong-Soo Jun, Yong-Sik Seok