Patents by Inventor Andy H. Nuyen

Andy H. Nuyen 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 producing an unsaturated carboxylic acid from an alkane
    Patent number: 8193387
    Abstract: A one-step vapor phase oxidation process produces an unsaturated carboxylic acid, such as acrylic acid or methacrylic acid, from an alkane, such as propane or isobutane, with a mixed metal oxide catalyst and an excess of alkane relative to oxygen. The unreacted alkane and the byproduct alkene are recycled to the reaction zone without separation. Overall yield and productivity of the unsaturated carboxylic improves for such a process. An analogous method for the preparation of unsaturated nitrites is also disclosed.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: June 5, 2012
    Assignee: Saudi Basic Industries Corporation
    Inventors: Paulette N. Hazin, Frederick Merrill Galloway, John S. Ledford, Andy H. Nuyen
  • Process for producing an unsaturated carboxylic acid from an alkane
    Publication number: 20090287019
    Abstract: A one-step vapor phase oxidation process produces an unsaturated carboxylic acid, such as acrylic acid or methacrylic acid, from an alkane, such as propane or isobutane, with a mixed metal oxide catalyst and an excess of alkane relative to oxygen. The unreacted alkane and the byproduct alkene are recycled to the reaction zone without separation. Overall yield and productivity of the unsaturated carboxylic improves for such a process. An analogous method for the preparation of unsaturated nitrites is also disclosed.
    Type: Application
    Filed: April 16, 2009
    Publication date: November 19, 2009
    Applicant: Saudi Basic Industries Corporation
    Inventors: Paulette N. Hazin, Frederick Merrill Galloway, John S. Ledford, Andy H. Nuyen