Patents by Inventor Hung-Long Fan

Hung-Long Fan 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).

  • Artificial sponge with liquid balls therein
    Patent number: 5952090
    Abstract: An artificial sponge includes a sponge body and at least one crushable liquid ball, the sponge body being made of open-cell foamed material having at least one receiving chamber, the at least one crushable liquid ball being respectively nested within the at least one receiving chamber inside the sponge body, each liquid ball having a thin, flexible enclosed membrane shell and a liquid filled in the shell, the least one liquid ball being respectively broken for letting the contained liquid to flow to the outside and to mix with water sucked in the sponge body when the sponge body is squeezed with the hand.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: September 14, 1999
    Inventor: Hung-Long Fan