Patents by Inventor Stig Gunnarsson

Stig Gunnarsson 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).

  • Processes for making high iron content stable ferric chloride solutions
    Patent number: 9290393
    Abstract: Processes for forming high iron content ferric chloride solutions, reconstituting ferric chloride solutions, and transporting the stable ferric chloride solutions with the high iron content are disclosed.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: March 22, 2016
    Assignee: KEMIRA OYJ
    Inventors: Krister Eskilsson, Stig Gunnarsson, Jeffrey Campbell, Jan Pavlicek, Faziollah Azarnoush, Esko Tirronen
  • PROCESSES FOR MAKING HIGH IRON CONTENT STABLE FERRIC CHLORIDE SOLUTIONS
    Publication number: 20130236379
    Abstract: Processes for forming high iron content ferric chloride solutions, reconstituting ferric chloride solutions, and transporting the stable ferric chloride solutions with the high iron content are disclosed.
    Type: Application
    Filed: November 30, 2011
    Publication date: September 12, 2013
    Inventors: Krister Eskilsson, Stig Gunnarsson, Jeffrey Campbell, Jan Pavlicek, Faziollah Azarnoush, Esko Tirronen
  • Processes for making stable ferric chloride solutions
    Patent number: 8071067
    Abstract: Processes for forming ferric chloride solutions that are stable at relatively low temperatures and suitable for transportation without precipitation are provided. The stable ferric chloride solutions have an iron content of about 16 to about 23 weight percent and a hydrochloric acid content of about 11 to about 17 weight percent, wherein the ferric chloride solution is a stable solution and/or reversibly freezes at ?10° C. Also disclosed are processes for reconstituting the stable ferric chlorides solutions to provide a final iron content of 10 to 14 weight percent and lower the concentration of hydrochloric acid contained therein.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: December 6, 2011
    Assignee: Kemira Water Solutions, Inc.
    Inventors: Krister Eskilsson, Jeff Campbell, Stig Gunnarsson, Jan Pavlicek
  • Processes For Making Stable Ferric Chloride Solutions
    Publication number: 20100301255
    Abstract: Processes for forming ferric chloride solutions that are stable at relatively low temperatures and suitable for transportation without precipitation are provided. The stable ferric chloride solutions have an iron content of about 16 to about 23 weight percent and a hydrochloric acid content of about 11 to about 17 weight percent, wherein the ferric chloride solution is a stable solution and/or reversibly freezes at ?10° C. Also disclosed are processes for reconstituting the stable ferric chlorides solutions to provide a final iron content of 10 to 14 weight percent and lower the concentration of hydrochloric acid contained therein.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 2, 2010
    Applicant: KEMIRA CHEMICALS INC.
    Inventors: Krister Eskilsson, Jeff Campbell, Stig Gunnarsson, Jan Pavlicek
  • PROCESS FOR THE PRODUCTION OF POLYALUMINIUM SALTS
    Publication number: 20100170778
    Abstract: The present invention relates to a process for the production of polyaluminium salts, preferably polyaluminium sulphate and polyaluminium chloride, and derivatives thereof, from aluminium containing raw materials and acids, wherein microwaves are used for partial heating of the reaction mixture. The present invention also relates to a system for the production of polyaluminium salts and derivatives thereof.
    Type: Application
    Filed: June 5, 2008
    Publication date: July 8, 2010
    Applicant: KEMIRA KEMI AB
    Inventors: Stig Gunnarsson, Marten Soderlund