Patents by Inventor Don-cheol Ahn

Don-cheol Ahn 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).

  • Method and apparatus for enhancing transfer efficiency of electronic photograph development equipment
    Patent number: 6701101
    Abstract: A method and apparatus for enhancing a transfer efficiency of electronic photograph development equipment, which enhances the transfer efficiency by controlling a transfer voltage output from a transfer voltage output end by a pulse width modulation command under the control of a microcomputer based on a transfer environment and a paper sheet recognition of the electronic photograph development equipment.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: March 2, 2004
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Don-cheol Ahn