Patents by Inventor Po Chun Lau

Po Chun Lau 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: 4892500
    Abstract: A versatile multiple spout balloon network is provided with thin walled resilient, single or multiple spout balloons which may be interconnected to other balloons or a pole using plugs. Plugs provide for resilient and airtight engagement of balloons at their spouts. Plugs may include an air channel for passage of air between balloons and the network. The network may include one or more poles, each pole having several branches. Balloons may make an airtight and resilient engagement with the poles at branches using a plug. A stand may be used to erect the plug pole by inserting the pole into a fitting hole in the middle of the stand. A plug unit may comprise multiple surfaces attached to, or integrated at, a central point in different patterns.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: January 9, 1990
    Inventor: Po Chun Lau