Patents by Inventor Chang Chih-wen

Chang Chih-wen 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).

  • Belt with a micro-adjustment buckle
    Patent number: 5673463
    Abstract: A belt with micro-adjustment buckle includes a male buckle and a female buckle. The male buckle means consists of a serrated plate and a securing element provided at an end of the serrated plate. An end of the belt is inserted through a securing element of the male buckle to lie flat against an inner side or outer side of the serrated plate which is fitted through a micro-adjustment frame of the female buckle and retained therein.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: October 7, 1997
    Inventor: Chang Chih-wen