Patents by Inventor Truc K. Nguyen

Truc K. Nguyen 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).

  • Method for controlling silica deposition in aqueous systems
    Patent number: 5100558
    Abstract: A method for the inhibition of silica deposition on the surfaces of a structure which contains an aqueous medium comprising adding to the aqueous medium a composition comprising HEDP, PEG and a water soluble polymer having the structure: ##STR1## wherein M is a water soluble cation. This invention is particularly effective in cooling water and steam generating systems.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: March 31, 1992
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, Cato R. McDaniel, Truc K. Nguyen, Steven P. Sherwood
  • Method of controlling silica deposition in aqueous systems
    Patent number: 5078891
    Abstract: A method for the inhibition of silica deposition on the internal surfaces of an aqueous system comprising adding to the aqueous system a phosphonate compound and a water soluble polymer having the structure: ##STR1## wherein M is a water soluble cation. The aqueous systems in which the water soluble phosphonate and polymer are particularly effective on cooling water and boiler systems.
    Type: Grant
    Filed: March 8, 1990
    Date of Patent: January 7, 1992
    Assignee: Betz Laboratories, Inc.
    Inventors: Steven P. Sherwood, Truc K. Nguyen, Cato R. McDaniel