Patents by Inventor Jinn-Fa Jang

Jinn-Fa Jang 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).

  • Surfboard making process
    Patent number: 5234638
    Abstract: A surfboard making process including the steps of preparing a polyethylene bag to hold a foamed EPS (expanded polystyrene), treating the polyethylene bag with the foamed EPS through a secondary foaming process, and then putting the product thus obtained from the secondary foaming process in the molding cavity of a molding die for treating into a surfboard by a steam bath.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: August 10, 1993
    Inventor: Jinn-Fa Jang