Patents by Inventor Nelson Chi Kai Ho

Nelson Chi Kai Ho 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: 6493912
    Abstract: A method of producing stone set jewelry includes the step of forming at least one affixation groove within the stone to be set in the jewelry. A stone to be set with the present method should have an upper and a lower portion which is at least substantially entirely hidden from view when the upper portion of the stone is viewed. In accordance with the present method the affixation groove should be formed in the lower portion of the stone such that it too is hidden from view when the upper portion of the stone is viewed. A heat setting method is disclosed for improving the bond between the pavilion of the stone and the wax model used in the casting process. The method also includes the deposition of a mounting material within the affixation groove by applying a conventional casting method.
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: December 17, 2002
    Assignee: China Diamond Production Company Limited
    Inventor: Nelson Chi-Kai Ho
  • Patent number: D513205
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: December 27, 2005
    Assignee: Nelson Jewellery Arts Company Ltd.
    Inventor: Nelson Chi Kai Ho
  • Patent number: D514015
    Type: Grant
    Filed: November 2, 2004
    Date of Patent: January 31, 2006
    Assignee: Nelson Jewellery Arts Company Ltd.
    Inventor: Nelson Chi Kai Ho
  • Patent number: D409518
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: May 11, 1999
    Assignee: Nelson Jewellery Arts Company Ltd.
    Inventor: Nelson Chi Kai Ho