Patents by Inventor Pascaline Nguyen

Pascaline Nguyen 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 method and device for controlling VOC, CO and halogenated organic emissions
    Patent number: 5643545
    Abstract: A method and device for treating a gas stream comprising at least one non-halogenated carbonaceous compound and optionally at least one halogenated organic compound. The gas stream, at 100.degree. C. to 650.degree. C. and in the presence of oxygen is contacted with a first catalyst in a first catalyst zone. The first catalyst comprises a first catalytic material deposited on a low acidity support material. In this zone, the non-halogenated compound is selectively reacted to form innocuous materials such as water and carbon monoxide. This can be followed by contacting the gas stream with a second catalyst in a second catalyst zone. The second catalyst comprises a second catalytic material deposited on a high acidity support material. In this zone, the halogenated organic compounds are reacted.
    Type: Grant
    Filed: June 8, 1995
    Date of Patent: July 1, 1997
    Assignee: Engelhard Corporation
    Inventors: James M. Chen, Pascaline Nguyen
  • Catalytic method and device for controlling VOC. CO and halogenated organic emissions
    Patent number: 5451388
    Abstract: A method and device for treating a gas stream comprising at least one non-halogenated carbonaceous compound and optionally at least one halogenated organic compound. The gas stream, at 100.degree. C. to 650.degree. C. and in the presence of oxygen is contacted with a first catalyst in a first catalyst zone. The first catalyst comprises a first catalytic material deposited on a low acidity support material. In this zone, the non-halogenated compound is selectively reacted to form innocuous materials such as water and carbon monoxide. This can be followed by contacting the gas stream with a second catalyst in a second catalyst zone. The second catalyst comprises a second catalytic material deposited on a high acidity support material. In this zone, the halogenated organic compounds are reacted.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: September 19, 1995
    Assignee: Engelhard Corporation
    Inventors: James M. Chen, Pascaline Nguyen