Patents by Inventor Heinz J. Robota

Heinz J. Robota 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).

  • Catalytic converter having a catalyst with noble metal on molecular sieve crystal surface and method of treating diesel engine exhaust gas with same
    Patent number: 5897846
    Abstract: A catalytic converter for treating exhaust gas from an internal combustion engine containing a catalyst characterized by having platinum or a platinum alloy dispersed predominately on the exterior surface of molecular sieve crystals. Also provided is a catalyst for such a converter and processes for manufacture of such catalyst. In addition, a process for treating exhaust gas from an internal combustion engine to reduce the amounts of hydrocarbon, carbon monoxide and nitrogen oxides emitted to the atmosphere is included.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: April 27, 1999
    Assignee: ASEC Manufacturing
    Inventors: Karl C. C. Kharas, Heinz J. Robota
  • Stabilized crystalline alumina compositions
    Patent number: 5877106
    Abstract: New thermally- and hydrothermally-stable .delta.-alumina compositions stabilized with an oxide of silicon, germanium, phosphorus, arsenic or a mixture thereof and methods of preparation of same are provided. Also provided are catalyst supports and catalysts made using these stabilized .delta.-alumina compositions, methods for making same, and methods for treating the exhaust gas from an internal combustion engine using such catalysts.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: March 2, 1999
    Assignee: ASEC Manufacturing
    Inventors: Karl C. C. Kharas, Roy T. Mitsche, Heinz J. Robota, Michael G. Gatter