Patents by Inventor Tiong C. Ha

Tiong C. Ha 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).

  • Effluent treatment
    Patent number: 5308499
    Abstract: An effluent treatment process having the steps of: a) adding a coagulant to the effluent to concentrate the organic material therein; b) treating the thus concentrated organic material with a mixture of a cationic polymer of copolymer in the presence of an anionic surfactant, a nonionic surfactant or both; and c) separating the organic material from the effluent by flotation.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: May 3, 1994
    Assignee: Commonwealth Scientific and Industrial Research Organisation
    Inventors: David R. Dixon, Tiong C. Ha