Patents by Inventor Chien-Hwa Tsao

Chien-Hwa Tsao 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).

  • Patent number: 6467982
    Abstract: An easily opened, elongated tubular container is disclosed. The container is composed of an inner tube having at least one open end and being adapted for filling with various liquid substances. An outer tube, relatively reciprocative with respect to the inner tube, and having at least one sealing element capable of sealing the open end of the inner tube is provided, and at least one attachment is installed at the exit open end of the outer tube. The sealing element, which is formed as one piece with the outer tube, closes the opening of the inner tube. The outer tube is displaceable, by the operator, from a position which closes the open end of the inner tube to the reverse position which releases the open end of the inner tube so that the liquid in the inner tube is released to flow out the open end and be absorbed by the attachment.
    Type: Grant
    Filed: October 24, 2000
    Date of Patent: October 22, 2002
    Inventor: Chien-Hwa Tsao