Patents by Inventor Mei Tsz Macy WONG

Mei Tsz Macy WONG 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).

  • Jewelry alloy
    Patent number: 11268174
    Abstract: This invention provides a jewelry alloy which improves mechanical properties of AuIn2 while preserving its attractive blue hue. In one embodiment, said mechanical properties comprises fracture toughness and hardness. In one embodiment, said jewelry alloy consist essentially of 43.0 to 49.0 wt % Au; 51.0 to 57.0 wt % In; 0.001 to 1.0 wt % of one or more elements selected from the group consisting of Fe and Ge; and 0.001 to 1.0 wt % of one or more elements selected from the group consisting of Rh, Ir and Ru.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: March 8, 2022
    Assignee: CHOW SANG SANG JEWELLERY COMPANY LIMITED
    Inventors: Wai Kei Cheung, Shuk Kwan Mak, Mei Tsz Macy WONG