Patents by Inventor Wal Hee Nam

Wal Hee Nam 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).

  • Process of increasing calcium content in an aqueous solution
    Patent number: 5716649
    Abstract: A batch process for increasing the calcium content of a water solution comprises the placement of a tin catalyst, a glass fibrous material, and water into a sealed tank and the application of heat to the tank for predetermined time intervals at progressively decreasing temperatures. The resulting solution is then extracted from the tank, wherein the solution has between 200 ppm and 500 ppm concentration of calcium.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: February 10, 1998
    Inventor: Wal Hee Nam