Patents by Inventor Chi Yan John Leong

Chi Yan John Leong 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).

  • Bioactive and osteoporotic bone cement
    Patent number: 6593394
    Abstract: A composition for use as a bioactive bone cement having a powder component including strontium-containing hydroxy apatite and formulated to create a settable fluid substance when mixed with a liquid component. The liquid component includes a Bisphenol A diglycidylether dimethacrylate resin which when mixed with the powder component creates a bioactive bone cement. The bioactive bone cement can alternatively be in the form of a two paste component system in which a first paste component including strontium-containing hydroxy apatite, Bisphenol A diglycidylether dimethacrylate resin and a polymerization initiator is formulated to create a settable paste substance when mixed with a second paste component. The second paste component includes strontium-containing hydroxy apatite, Bisphenol A diglycidylether dimethacrylate resin, and a polymerization accelerator which when mixed together with the first paste component creates a bioactive bone cement.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: July 15, 2003
    Assignee: Prosperous Kingdom Limited
    Inventors: Yiwen Li, Weijia William Lu, Man Chee Kenneth Cheung, Dip Kei Keith Luk, Chi Yan John Leong