Patents by Inventor Shi-Liang Fu

Shi-Liang Fu 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).

  • Biodegradable modified polyaspartic polymers for corrosion and scale control
    Patent number: 6022401
    Abstract: Several copolymers of aspartic acid and another monomer provide effective mild steel corrosion inhibitors and scale formation inhibitors under oil field conditions. The copolymers are polymers of modified polyaspartic acid mer units and polyaspartic acid mer units. The resulting polymers are biodegradable.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: February 8, 2000
    Assignee: Nalco Chemical Company
    Inventors: Jiansheng Tang, Shi-Liang Fu, Daniel H. Emmons
  • Enhanced corrosion protection by use of friction reducers in conjuction with corrosion inhibitors
    Patent number: 5939362
    Abstract: A method of inhibiting corrosion of iron and steel alloys in contact with oil-in-brine emulsions is claimed. The method comprises treating the oil-in-brine emulsions with an effective amount of a water soluble polymer having an average molecular weight of at least one million and an effective amount of a nitrogen-containing corrosion inhibitor.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: August 17, 1999
    Assignee: Nalco/Exxon Energy Chemicals, L.P.
    Inventors: John D. Johnson, Shi-Liang Fu, Matthew J. Bluth, Robert A Marble