Patents by Inventor Jeffrey A. Barnhorst

Jeffrey A. Barnhorst 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).

  • Transesterification process
    Patent number: 6489496
    Abstract: The present invention pertains to a process for making an alkyl ester of a carboxylic acid via transesterification comprising the steps of: (1) reacting a carboxylic acid ester with an alcohol and an effective amount of a transesterification catalyst in a reaction zone to form a reaction mixture comprised of a product ester and a product alcohol; (2) passing the reaction mixture from step (1) through a centrifugal separation zone wherein the second alcohol is separated from the second ester. The process according to the invention allows for shorter reaction times and improved product yields.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: December 3, 2002
    Assignee: Cognis Corporation
    Inventors: Jeffrey A. Barnhorst, Michael D. Staley, Dean A. Oester
  • Transesterification process
    Publication number: 20020028961
    Abstract: The present invention pertains to a process for making an alkyl ester of a carboxylic acid via transesterification comprising the steps of: (1) reacting a carboxylic acid ester with an alcohol and an effective amount of a transesterification catalyst in a reaction zone to form a reaction mixture comprised of a product ester and a product alcohol; (2) passing the reaction mixture from step (1) through a centrifugal separation zone wherein the second alcohol is separated from the second ester. The process according to the invention allows for shorter reaction times and improved product yields.
    Type: Application
    Filed: June 26, 2001
    Publication date: March 7, 2002
    Inventors: Jeffrey A. Barnhorst, Michael D. Staley, Dean A. Oester
  • Physiological fluid separation vehicles having improved resistance to inward migration of therapeutic agents
    Patent number: 6072022
    Abstract: A polyester composition for use in facilitating separation of blood serum or plasma from a cellular portion of blood, the composition containing: (a) a multifunctional acid component comprising: (i) a benzene polycarboxylic acid, and derivatives thereof; and (ii) an aliphatic polycarboxylic acid having from about 16 to about 40 carbon atoms; and (b) a diol component, and wherein the multifunctional acid component and diol component are employed in an equivalent ratio ranging from about 0.8:1.1 to about 1.0:1.3.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: June 6, 2000
    Assignee: Henkel Corporation
    Inventors: William L. O'Brien, Dean A. Oester, Jeffrey A. Barnhorst, Lidia Kupczyk-Subotkowska, John P. Fisher
  • Method of alkoxylating alcohols
    Patent number: 5907067
    Abstract: Alkoxylated alcohols containing no insoluble matter which would prevent the spray application of such materials are obtained by reacting an alcohol and epoxide in the presence of a catalytic amount of a calcined hydrotalcite catalyst to form a crude alkoxylated product. The crude product is then passed through silica gel to remove insoluble by-products.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: May 25, 1999
    Assignee: Henkel Corporation
    Inventors: Jeffrey A. Barnhorst, A. Frederick Elsasser, Jr., C. William Blewett