Patents by Inventor Hermann Siegert

Hermann Siegert 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).

  • Hydrogen cyanide synthesis process
    Patent number: 6743407
    Abstract: A process for the production of hydrogen cyanide is provided, wherein hydrogen cyanide is synthesized by reacting methane or methane-containing natural gas, ammonia and oxygen-enriched air or oxygen in the presence of a catalyst comprising platinum or a platinum alloy; wherein the reactants are present in the following molar ratios [ O 2 ] [ O 2 + N 2 ] = 0.25 ⁢   ⁢ to ⁢   ⁢ 1.
    Type: Grant
    Filed: July 13, 2001
    Date of Patent: June 1, 2004
    Assignee: Roehm GmbH & Co. KG
    Inventors: Thomas Schaefer, Hermann Siegert
  • Hydrogen cyanide synthesis process
    Publication number: 20020054848
    Abstract: A process for the production of hydrogen cyanide is provided, wherein hydrogen cyanide is synthesized by reacting methane or methane-containing natural gas, ammonia and oxygen-enriched air or oxygen in the presence of a catalyst comprising platinum or a platinum alloy; wherein the reactants are present in the following molar ratios 1 [ O 2 ] [ O 2 + N 2 ] = 0.25 ⁢   ⁢ to ⁢   ⁢ 1.0 ; [ CH 4 ] [ NH 3 ] = 0.95 ⁢   ⁢ to ⁢   ⁢ 1.
    Type: Application
    Filed: July 13, 2001
    Publication date: May 9, 2002
    Applicant: ROEHM GMBH & CO. KG
    Inventors: Thomas Schaefer, Hermann Siegert
  • Method for recovering aromatic polyethers
    Patent number: 4673730
    Abstract: Method for recovering an aromatic polyether as a solid product from a solution thereof in an organic solvent by precipitating with a fluorohydrocarbon which may also contain chlorine or bromine and which boils at -30.degree. C. to +100.degree. C.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: June 16, 1987
    Assignee: Rohm GmbH
    Inventors: Hermann Siegert, Werner Ude