Patents by Inventor Roger Keranan Rains

Roger Keranan Rains 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).

  • Zeolite support loaded with a base material for use in the coupling of aniline and nitrobenzene
    Patent number: 6495723
    Abstract: This invention provides a composition suitable for use in a reaction zone where aniline is reacted with nitrobenzene to obtain intermediates of 4-aminodiphenylamine comprising a solid support having interior channels with base material employed in the reaction loaded into the channels. The cross-sectional dimensions of the channels are such as to provide a restricted transition state with regard to the reaction and to improve the selectivity of the reaction in favor of the intermediates. The invention also provides a method for loading the base material in the solid support. The invention further provides a process for carrying out the above reaction using the above composition.
    Type: Grant
    Filed: June 21, 2000
    Date of Patent: December 17, 2002
    Assignee: Flexsys America
    Inventors: Antonio L. DeVera, Roger Keranan Rains