Patents by Inventor Wen-Shwong Hwang

Wen-Shwong Hwang 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).

  • Composition of an anti-scale-forming agent
    Patent number: 6458292
    Abstract: A composition for an anti-scale-forming agent includes oil-based polyalkylenes, amines phosphorous and oxygen in a polymer for providing dispersivity and anti-oxidation and having the following formula: By integrating both characteristics into a single polymer, the anti-scale-forming agent in accordance with the present invention can be used as an anti-scale-forming agent for a manufacturing process in a petroleum refinery plant or the like chemistry factory. R1, R2 and x are defined herein.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: October 1, 2002
    Assignee: Chinese Petroleum Corp.
    Inventors: Jiang-Jen Lin, Jann-Chen Lin, Wen-Hen L{dot over (o)}, Wen-Shwong Hwang, Kun-Hai Lin
  • Novel antifoulant
    Publication number: 20020049354
    Abstract: The present invention relates to a novel antifoulant which is prepared by the Mannich reaction of phenolic compounds, formaldehyde, and amine compounds.
    Type: Application
    Filed: March 2, 2001
    Publication date: April 25, 2002
    Applicant: Chinese Petroleum Corporation
    Inventors: Jiang-Jen Lin, Jann-Chen Lin, Wen-Hen Lo, Wen-Shwong Hwang, Kun-Hai Lin