Patents by Inventor Jung-Fa Wu

Jung-Fa Wu 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 for manufacturing a shoe sole having two densities
    Patent number: 6045733
    Abstract: A method for manufacturing a shoe sole includes step (1): preparing an inside part which has two passages defined therethrough, step (2): placing the inside part into a mold, step (3): injecting foam material into the mold to let the foam material fill in the two passages and heating the foam material so as to form abonded combination, and step (4): removing the bonded combination from the mold and drying the combination.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: April 4, 2000
    Assignee: Pao Chen Corporation
    Inventors: Shih-Chien Chu, Jung-Fa Wu, Chih-Hao Tseng, Chun-Lung Chen, Chih-Pao Chang