Patents by Inventor Gunter Peantek

Gunter Peantek 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 the manufacture of alkali metal salts of amino polycarboxylic acids
    Patent number: 3966803
    Abstract: Production of alkali metal salts of amino polycarboxylic acids by reaction of a suitable carboxylic acid nitrile with aqueous alkali at elevated temperature. The salts are produced from an amino polycarboxylic acid nitrile suspension in an aqueous alkali metal hydroxide solution, which has a minimum strength of substantially 30 % by weight and contains at least stoichiometric proportions of alkali metal hydroxide; the suspension is introduced into a reactor heated to a temperature between 60.degree. and 150.degree. C, and salt formation is effected by thorough agitation.
    Type: Grant
    Filed: April 25, 1975
    Date of Patent: June 29, 1976
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Wilhelm Vogt, Hubert Neumaier, Erich Schallus, Gunter Peantek