Patents by Inventor Angela S. Kowalski

Angela S. Kowalski 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).

  • Patent number: 8470981
    Abstract: The invention relates to a method of dewatering corn gluten stream wherein coagulant is add to the corn gluten stream of the corn wet milling process. The method of dewatering corn gluten uses an effective amount of a coagulant of one or more anionic polymers, the anionic polymers comprising one or more anionic monomers. The method further includes a process for separating the water from the gluten using a solids/liquids filtration device.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 25, 2013
    Assignee: Nalco Company
    Inventors: David W. Scheimann, Angela S. Kowalski
  • Patent number: 7497955
    Abstract: A method dewatering thin stillage process streams generated in the processing of grain to ethanol comprising adding to the process streams an effective flocculating amount of an anionic copolymer comprising acrylic acid sodium salt, methacrylic acid sodium salt or 2-acrylamido-2-methyl-1-propanesulfonic acid sodium salt to form a mixture of water and flocculated solids; and separating the water from the flocculated solids using a dewatering device.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: March 3, 2009
    Assignee: Nalco Company
    Inventors: David W. Scheimann, Angela S. Kowalski
  • Publication number: 20090005539
    Abstract: The invention relates to a method of dewatering corn gluten stream wherein coagulant is add to the corn gluten stream of the corn wet milling process. The method of dewatering corn gluten uses an effective amount of a coagulant of one or more anionic polymers, the anionic polymers comprising one or more anionic monomers. The method further includes a process for separating the water from the gluten using a solids/liquids filtration device.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventors: David W. Scheimann, Angela S. Kowalski
  • Patent number: 6258277
    Abstract: The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dithiocarbamate functionalities to the wastewater.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: July 10, 2001
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Salmen, Angela S. Kowalski, E. H. Kelle Zeiher, William J. Ward
  • Patent number: 6140130
    Abstract: A system and method for the detection and removal of copper from wastewater streams from semiconductor or printed circuit board manufacturing is described and claimed. The detection system and method involve the addition of a reagent that reacts with copper to quench the fluorophore present, with the decrease in fluorescence being detected by a fluorometer. The reduction of fluorescence is then used to calculate the amount of copper present in the form of Cu+2 ion in the wastewater. The removal system and method involve either the addition of a polymer that reacts with copper to form an insoluble precipitate with said precipitate then being removed by using any technique commonly known in the art; or the use of an ion exchange column to remove the copper from the wastewater stream.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: October 31, 2000
    Assignee: Nalco Chemical Company
    Inventors: Kristine S. Salmen, Angela S. Kowalski, Brian V. Jenkins, John E. Hoots