Patents by Inventor Raymond C. Shih

Raymond C. Shih 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 terephthalic acid
    Patent number: 9085522
    Abstract: Methods and apparatus for producing terephthalic acid using a p-xylene stream enriched with p-toluic acid are described. The apparatus includes first and second reactor zones. The reactor zones can be in the same reactor or in different reactors.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: July 21, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Raymond C. Shih
  • Process for oxidizing alkyl-aromatic compounds
    Patent number: 9045408
    Abstract: A process for oxidizing an alkyl-aromatic compound is described. The process includes oxidizing the alkyl-aromatic compound to produce a first oxidation product; contacting at least a portion of the first oxidation product, a solvent comprising an ionic liquid, a bromine source, a catalyst, and an oxidizing agent to produce a second product comprising a mother liquor and at least one of an aromatic alcohol, an aromatic aldehyde, an aromatic ketone, and an aromatic carboxylic acid; and adding at least a portion of the mother liquor in the contacting step.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: June 2, 2015
    Assignee: UOP LLC
    Inventors: Alakananda Bhattacharyya, Raymond C. Shih
  • PROCESS FOR PRODUCING TEREPHTHALIC ACID
    Publication number: 20130172606
    Abstract: Methods and apparatus for producing terephthalic acid using a p-xylene stream enriched with p-toluic acid are described. The apparatus includes first and second reactor zones. The reactor zones can be in the same reactor or in different reactors.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Applicant: UOP LLC
    Inventors: Alakananda Bhattacharyya, Raymond C. Shih
  • PROCESS FOR OXIDIZING ALKYL-AROMATIC COMPOUNDS
    Publication number: 20130172610
    Abstract: A process for oxidizing an alkyl-aromatic compound is described. The process includes oxidizing the alkyl-aromatic compound to produce a first oxidation product; contacting at least a portion of the first oxidation product, a solvent comprising an ionic liquid, a bromine source, a catalyst, and an oxidizing agent to produce a second product comprising a mother liquor and at least one of an aromatic alcohol, an aromatic aldehyde, an aromatic ketone, and an aromatic carboxylic acid; and adding at least a portion of the mother liquor in the contacting step.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Applicant: UOP LLC
    Inventors: Alakananda Bhattacharyya, Raymond C. Shih