Patents by Inventor Yee H. Thong

Yee H. Thong 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).

  • Medium for the separation of human blood leucocytes
    Patent number: 4255256
    Abstract: A rapid one-step density separation method for separating and purifying whole blood into mononuclear and polymorphonuclear leucocyte and erythrocyte fractions wherein use is made of a separating medium consisting of a single aqueous solution of a high molecular weight sucrose or glucose polymer, and a water soluble metrizoate or diatrizoate compound, the density of the solution being greater than 1.095 gm/ml at room temperature and the concentration of the sucrose or glucose polymer lying in the range of 5 to 10% (based on weight/total volume of solution).
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: March 10, 1981
    Inventors: Antonio Ferrante, Yee H. Thong