Patents by Inventor Yang C. Li

Yang C. Li 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).

  • Comedo extracting tool
    Patent number: 5431665
    Abstract: A comedo extracting tool having a comedo extractor at one end, a clap forceps at an opposite end, and a flat handle connected between the comedo extractor and the clamp forceps. The comedo extractor has an oblong opening in the center, the width of the oblong opening reducing gradually toward the handle. The clamp forceps terminates in a pair of pointed hooks.
    Type: Grant
    Filed: August 2, 1994
    Date of Patent: July 11, 1995
    Inventor: Yang C. Li