Patents by Inventor Gerrit H. van den Berg

Gerrit H. van den Berg 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).

  • Dialysis apparatus and process for controlling the phosphate level of blood
    Patent number: 4542015
    Abstract: An apparatus for purifying blood has a blood compartment and a clearance compartment separated by a semi-permeable membrane. The apparatus includes a device containing a cation exchange resin charged with metal ions whose phosphates are insoluble in water. Metal salts of iron, aluminum, zirconium, lanthanum, thorium and tin are deposited on a cation exchange material and the charged cation exchange resin is contacted with dialysis liquid. The process of treating blood with the dialysis liquid is also contemplated.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: September 17, 1985
    Assignee: Organon Teknika B.V.
    Inventors: Robert Smakman, Gerrit H. van den Berg
  • Dialysis with ion exchange extraction of phosphates
    Patent number: 4213859
    Abstract: An apparatus for purifying blood has a blood compartment and a clearance compartment separated by a semi-permeable membrane. The apparatus includes a device containing a cation exchange resin charged with metal ions whose phosphates are insoluble in water. Metal salts of iron, aluminium, zirconium, lanthanum, thorium and tin are deposited on a cation exchange material and the charged cation exchange resin is contacted with dialysis liquid. The process of treating blood with the dialysis liquid is also contemplated.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: July 22, 1980
    Assignee: Akzo N.V.
    Inventors: Robert Smakman, Gerrit H. van den Berg
  • Method for the removal of ferric ions from a concentrated aqueous zinc solution
    Patent number: 4157298
    Abstract: Ferric ions are removed from a concentrated aqueous zinc solution having a pH value in the range of about 0 to about 1.3, by contacting the zinc solution with a cation exchange chelate resin containing aminocarboxylic acid and/or iminodicarboxylic acid groups.
    Type: Grant
    Filed: December 23, 1977
    Date of Patent: June 5, 1979
    Assignee: Akzona Incorporated
    Inventors: Gerrit H. van den Berg, Wilhelmus Pannekeet, Kees Koerts, Robert Smakman