Patents by Inventor Mei-Chun Hsiao

Mei-Chun Hsiao 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).

  • Tamperproof lock
    Patent number: 6079239
    Abstract: A tamperproof lock includes a housing of a cylindrical construction, and a lock body located in the cylindrical housing. The lock body is rotatably located in the housing such that the lock body can be turned by a key which is inserted thereinto. As the lock body is turned a predetermined angle by the key, the lock body is disengaged with the housing.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: June 27, 2000
    Inventor: Mei-Chun Hsiao