Patents by Inventor Felix Yu

Felix Yu 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).

  • Table top rock tumbler
    Patent number: 9421664
    Abstract: An ultra-quiet rock tumbler has a barrel assembly supported on a barrel support having two uprights extending from a base. The barrel assembly has an inner barrel with a removable top, that fits into a middle barrel having a removable top and the middle barrel fits into an outer barrel having a removable top. Energy absorbing material, preferably polyurethane foam, surrounds both the inner barrel and the middle barrel. A motor is provided in the barrel support for rotating the barrel assembly.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: August 23, 2016
    Assignee: Soma International Ltd.
    Inventor: Felix Yu
  • Rock tumbler
    Patent number: D757136
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: May 24, 2016
    Assignee: Soma International LTD.
    Inventor: Felix Yu