Patents by Inventor Candice Wing Jong Tong

Candice Wing Jong Tong 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).

  • Alloy with interference thin film and method for making the same
    Patent number: 12077839
    Abstract: This invention provides an alloy with an interference thin film and the method for making the same. In one embodiment, said alloy consists essentially of 55.0-78.0 wt % Au, 8.0-24.0 wt % Ag, 8.0-24.0 wt % Cu and 0.0-3.0 wt % deoxidizer, and said interference thin film is grown on a surface of said alloy and has a thickness of less than 200 nm; wherein said interference thin film exhibits a patination color.
    Type: Grant
    Filed: August 29, 2023
    Date of Patent: September 3, 2024
    Assignee: CHOW SANG SANG JEWELLERY COMPANY LIMITED
    Inventors: Wai Kei Cheung, Shuk Kwan Mak, Candice Wing Jong Tong
  • Platinum electrodeposition bath and uses thereof
    Patent number: 10612149
    Abstract: This invention relates to a platinum electrodeposition bath which is capable of forming platinum deposits having an attractive shiny granular surface like a velvet, which is particularly useful in jewelry manufacturing. The velvet effect can be illustrated by comparing the surface roughness with a bright smooth platinum deposit.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: April 7, 2020
    Assignee: CHOW SANG SANG JEWELLERY COMPANY LIMITED
    Inventors: Wai Kei Cheung, Shuk Kwan Mak, Candice Wing Jong Tong