Patents by Inventor Waheed A. Mukaddam

Waheed A. Mukaddam 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).

  • Production of alkyl aromatic compounds with catalyst reactivation
    Patent number: 7449420
    Abstract: Improved processes are provided for the production of alkyl aromatic compounds using zeolite catalyst(s) and for periodic reactivation in situ of zeolite catalyst(s) that have at least in part become deactivated. Processes according to this invention are typically carried out in a reaction section loaded with catalyst(s) wherein a desired alkyl aromatic compound is produced from feed aromatic and olefin compounds followed by a separation section in which the desired product is isolated and recovered. Alkylation, transalkylation, and/or isomerization reactions that occur in the reaction section are carried out in liquid phase or partial liquid phase over the said zeolite catalyst(s).
    Type: Grant
    Filed: March 19, 2004
    Date of Patent: November 11, 2008
    Assignee: Stone & Webster Inc.
    Inventors: Shyh-Yuan Henry Hwang, Waheed A. Mukaddam, Francis A. Demers, Dana Johnson
  • Production of alkyl aromatic compounds with catalyst reactivation
    Publication number: 20040242404
    Abstract: Improved processes are provided for the production of alkyl aromatic compounds using zeolite catalyst(s) and for periodic reactivation in situ of zeolite catalyst(s) that have at least in part become deactivated. Processes according to this invention are typically carried out in a reaction section loaded with catalyst(s) wherein a desired alkyl aromatic compound is produced from feed aromatic and olefin compounds followed by a separation section in which the desired product is isolated and recovered. Alkylation, transalkylation, and/or isomerization reactions that occur in the reaction section are carried out in liquid phase or partial liquid phase over the said zeolite catalyst(s).
    Type: Application
    Filed: March 19, 2004
    Publication date: December 2, 2004
    Inventors: Shyh-Yuan Henry Hwang, Waheed A. Mukaddam, Francis A. Demers, Dana Johnson