Patents by Inventor Michael P. Lesar

Michael P. Lesar 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).

  • Process for dewatering a mineral slurry concentrate and increasing the production of a filter cake
    Patent number: 8093303
    Abstract: The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and an effective amount of a cationic polymer to form a nonionic surfactant and cationic polymer treated aqueous mineral slurry concentrate, and subjecting the treated aqueous mineral slurry concentrate to a liquid water removal process for dewatering the treated aqueous mineral slurry and for increasing the production of a resulting filter cake of the dewatered mineral slurry. An improved mineral slurry concentrate composition and an improved mineral concentrate filter cake is also disclosed.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: January 10, 2012
    Assignee: Neo Solutions, Inc.
    Inventors: Keith C. Hovland, Todd W. Groff, Monica A. Yorke, Charles R. Sundberg, Michael P. Lesar, Ruta O. Rakutis
  • PROCESS FOR DEWATERING A MINERAL SLURRY CONCENTRATE AND INCREASING THE PRODUCTION OF A FILTER CAKE
    Publication number: 20110009534
    Abstract: The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and an effective amount of a cationic polymer to form a nonionic surfactant and cationic polymer treated aqueous mineral slurry concentrate, and subjecting the treated aqueous mineral slurry concentrate to a liquid water removal process for dewatering the treated aqueous mineral slurry and for increasing the production of a resulting filter cake of the dewatered mineral slurry. An improved mineral slurry concentrate composition and an improved mineral concentrate filter cake is also disclosed.
    Type: Application
    Filed: September 22, 2010
    Publication date: January 13, 2011
    Inventors: Keith C. Hovland, Todd W. Groff, Monica A. Yorke, Charles R. Sundberg, Michael P. Lesar, Ruta O. Rakutis
  • Process for dewatering a mineral slurry concentrate and increasing the production of a filter cake
    Patent number: 7824553
    Abstract: The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and an effective amount of a cationic polymer to form a nonionic surfactant and cationic polymer treated aqueous mineral slurry concentrate, and subjecting the treated aqueous mineral slurry concentrate to a liquid water removal process for dewatering the treated aqueous mineral slurry and for increasing the production of a resulting filter cake of the dewatered mineral slurry. An improved mineral slurry concentrate composition and an improved mineral concentrate filter cake is also disclosed.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: November 2, 2010
    Assignee: Neo Solutions, Inc.
    Inventors: Keith C. Hovland, Todd W. Groff, Monica A. Yorke, Charles R. Sundberg, Michael P. Lesar, Ruta O. Rakutis
  • Process for dewatering a mineral slurry concentrate and increasing the production of a filter cake
    Publication number: 20090026145
    Abstract: The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and an effective amount of a cationic polymer to form a nonionic surfactant and cationic polymer treated aqueous mineral slurry concentrate, and subjecting the treated aqueous mineral slurry concentrate to a liquid water removal process for dewatering the treated aqueous mineral slurry and for increasing the production of a resulting filter cake of the dewatered mineral slurry. An improved mineral slurry concentrate composition and an improved mineral concentrate filter cake is also disclosed.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 29, 2009
    Inventors: Keith C. Hovland, Todd W. Groff, Monica A. Yorke, Charles R. Sundberg, Michael P. Lesar, Ruta O Rakutis