Patents by Inventor Hermann Kempen

Hermann Kempen 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 preventing formation of scale
    Patent number: 6656365
    Abstract: A process for preventing formation of scale which comprises adding, into a water system in which ozone is used for disinfection, a polymeric scale inhibitor having a high molecular weight which gives an average molecular weight within an optimum range for preventing formation of scale after the polymeric scale inhibitor is decomposed with ozone. In accordance with the process, the polymeric scale inhibitor having an average molecular weight within the optimum range for preventing formation of scale is present in the water system in which ozone is used for disinfection and formation of scale is effectively prevented.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: December 2, 2003
    Assignee: Kurita Water Industries Ltd.
    Inventors: Takashi Suzuki, Akihide Hirano, Hermann Kempen, Katsuhiro Ishikawa, Masahiro Shiratani
  • Process for preventing formation of scale
    Publication number: 20020195583
    Abstract: A process for preventing formation of scale which comprises adding, into a water system in which ozone is used for disinfection, a polymeric scale inhibitor having a high molecular weight which gives an average molecular weight within an optimum range for preventing formation of scale after the polymeric scale inhibitor is decomposed with ozone.
    Type: Application
    Filed: October 19, 2001
    Publication date: December 26, 2002
    Applicant: KURITA WATER INDUSTRIES LTD.
    Inventors: Takashi Suzuki, Akihide Hirano, Hermann Kempen, Katsuhiro Ishikawa, Masahiro Shiratani