Patents by Inventor Chin-Tu Wang

Chin-Tu Wang 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).

  • Publication number: 20040020328
    Abstract: A method for manufacturing a cutter mold for use on a cutting machine to cut articles includes the steps of: preparing a metal plate, coating a printing ink layer on the surface of the metal plate to form a printing ink area and a non-printing ink layer, drying the printing ink layer on the metal plate, submerging the metal plate in an etching agent to etch the non-printing ink layer to form a cutter with a tapered top end, and finally grinding the tapered top end of the cutter to form an edge to complete the cutter mold.
    Type: Application
    Filed: July 30, 2002
    Publication date: February 5, 2004
    Inventor: Chin-Tu Wang
  • Patent number: 5565065
    Abstract: A distilled water supply device including a stand, a condensing unit mounted on the stand and separated by a partition wall into an upper chamber, which receives water from an external water source, and a bottom chamber, which condenses steam into distilled water, a heating unit detachably mounted inside the stand below the condensing unit and controlled to heat water from the upper chamber into steam, permitting steam to be guided into the bottom chamber for condensing, a vertical guide pipe for guiding water from the upper chamber to the heating unit, a vertical steam pipe for guiding steam from the heating unit to the bottom chamber for condensing.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: October 15, 1996
    Inventor: Chin-Tu Wang
  • Patent number: 5496447
    Abstract: A distilling apparatus for distillation of water, including a condensing chamber divided into an upper holding space for receiving water from a water source and a lower holding chamber for condensing steam into water, a heating chamber controlled to heat water from the upper holding space into steam and having a steam outlet connected to the lower holding space for guiding steam into the lower holding space for condensing, a hot water chamber, which receives condensed water from the lower holding space of the condensing chamber, and a cold water chamber, which receives distilled water from the hot water chamber and cools it down by an electronic cooler.
    Type: Grant
    Filed: March 10, 1995
    Date of Patent: March 5, 1996
    Inventor: Chin-Tu Wang