Patents by Inventor Heike Kinz

Heike Kinz 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 isolating hydroxymonocarboxylic and tricarboxylic acids
    Patent number: 5676838
    Abstract: The invention relates to the removal of hydroxymonocarboxylic acids and tricarboxylic acids from aqueous solutions by adsorption on zeolites with a modulus of up to 400.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: October 14, 1997
    Assignee: Degussa Aktiengesellschaft
    Inventors: Elfriede Sextl, Akos Kiss, Heike Kinz, Wiltrud Schaefer-Treffenfeldt, Sems Yonsel, Stefan Stockhammer
  • Process for reducing the carbon content of aqueous hydrogen peroxide solutions
    Patent number: 5342602
    Abstract: Aqueous hydrogen peroxide solutions contain variable amounts of carbon compounds following their production by the so-called anthraquinone process. Various methods are known for separating out carbon compounds, including those using organic ion exchangers or macro-porous organic adsorber resins. Described is a process using a solid adsorption agent, which can be regenerated without causing any problems, whereby the carbon content is reduced. The solid adsorption agent is a zeolite from the set of dealuminised H-Y-zeolites with a (SiO.sub.2 /Al.sub.2 O.sub.3) ratio equal to or greater than 20 or H-mordenites with a (SiO.sub.2 /A1.sub.2 O.sub.3) ratio of at least 20.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: August 30, 1994
    Assignee: Degussa Aktiengesellschaft
    Inventors: Gerhard Zimmer, Heike Kinz, Elfriede Sextl
  • Process for the separation of amino acids from aqueous solutions
    Patent number: 5312980
    Abstract: A process for the separation of amino acids from aqueous solutions by adsorption on zeolites of different types. It is unnecessary to separate the biomass prior to the treatment.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: May 17, 1994
    Assignee: Degussa Aktiengesellschaft
    Inventors: Sems Yonsel, Wiltrud Schafer-Treffenfeldt, Akos Kiss, Elfriede Sextl, Heike Kinz