Patents by Inventor Gunter Wittrowsky

Gunter Wittrowsky 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).

  • Method for solidifying boron-containing radioactive residues
    Patent number: 4500449
    Abstract: Solidifying radioactive liquid concentrate residues containing borates by embedding in a binder by mixing. Prior to embedding, sodium hydroxide is added to the waste concentrate to obtain a mole ratio of sodium to boron of 0.25 with a corresponding pH value in the range of 7.3 to 8.0 or 0.7 with a corresponding pH value of 9.8 to 10.2. The waste concentrate with added sodium hydroxide is mixed with a binder to embed it into the binder.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: February 19, 1985
    Assignee: Kraftwerk Union Aktiengesellschaft
    Inventors: Klaus Kuhnke, Dietmar Bege, Anwer Puthawala, Gunter Wittrowsky