Patents by Inventor Dodd Fong

Dodd Fong 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).

  • Vinylamine polymers for removing color from paper mill effluents
    Patent number: 5476594
    Abstract: The invention comprises a process for removing true and apparent color from pulp and paper waste waters. It comprises treating these waste waters with a vinylamine polymer including from about 1 to about 100 mole percent vinylamine and from about 1 to about 99 mole percent of at least one monomer selected from the group consisting of amidine vinylformamide, vinyl alcohol, vinyl acetate, vinyl pyrrolidinone and the esters, amides, nitriles and salts of acrylic acid and methacrylic acid.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: December 19, 1995
    Assignee: Nalco Chemical Company
    Inventors: John H. Collins, Dodd Fong, Anthony G. Sommese, Amy M. Tseng