Patents by Inventor Yung-Tung Chiang

Yung-Tung Chiang 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).

  • Automatic corkscrew
    Patent number: 4955261
    Abstract: This disclosure relates to an automatic corkscrew and in particular to one which utilizes a motor in association with a ferrule and a drawing tube to rotate a worm into a cork of a bottle and draw it out automatically. Then, the corkscrew may also withdraw the cork automatically by switching a conversion button.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: September 11, 1990
    Assignee: Chyuan How Enterprise Co., Ltd.
    Inventor: Yung-Tung Chiang