Patents by Inventor Richard Stringfield

Richard Stringfield 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).

  • Separation of plant oil triglyceride mixtures by solid bed adsorption
    Patent number: 7097770
    Abstract: A solid bed adsorptive process for separating a seed oil into two substantially pure triglyceride fractions. The process involves contacting a seed oil, such as castor oil, preferably as a concentrate, with an adsorbent in a bed, the adsorbent having a particle size greater than about 40 microns, and thereafter contacting the adsorbent with a desorbent material, preferably under minimal flow conditions, to obtain a raffinate output stream containing predominantly a second triglyceride and an extract output stream containing predominantly a first triglyceride. Purified fatty acid triglyceride esters obtainable from castor, vernonia, and lesquerella plant oils provide renewable, non-petroleum-based sources of chemical feedstocks.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: August 29, 2006
    Assignee: Dow Global Technologies Inc.
    Inventors: Zenon Lysenko, Sanjeev Katti, Richard Stringfield, Thomas Gregory, George J. Quarderer, Jr.
  • Separation of plant oil triglyceride mixtures by solid bed adsorption
    Publication number: 20040094477
    Abstract: A solid bed adsorptive process for separating a seed oil into two substantially pure triglyceride functions. The process involves contacting a seed oil, such as castor oil, preferably as a concentrate, with an adsorbent in a bed, the adsorbent having a particle size greater than about 40 microns, and thereafter contacting the adsorbent with a desorbent material, preferably under minimal flow conditions, to obtain a raffinate output stream containing predominantly a second triglyceride and an extract output stream containing predominantly a first triglyceride. Purified fatty acid triglyceride esters obtainable from castor, vernonia, and lesquerella plant oils provide renewable, non-petroleum-based sources of chemical feedstocks.
    Type: Application
    Filed: September 12, 2003
    Publication date: May 20, 2004
    Inventors: Zenon Lysenko, Sanjeev Katti, Richard Stringfield, Thomas Gregory, George J Quarderer