Patents by Inventor Cheng Han-Shim

Cheng Han-Shim 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).

  • Spotlight
    Patent number: D505507
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: May 24, 2005
    Inventor: Cheng Han-Shim
  • Hand held vacuum cleaner
    Patent number: D512192
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: November 29, 2005
    Assignee: AK Industrrial Co., Ltd.
    Inventor: Cheng Han Shim
  • Spotlight
    Patent number: D463592
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: September 24, 2002
    Assignee: AK Industrial Co. Ltd.
    Inventor: Cheng Han-Shim