Patents by Inventor Roger Duffield

Roger Duffield 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).

  • GREEN TEA COMPOSITIONS
    Publication number: 20170246235
    Abstract: Disclosed herein are green tea plant material extracts, and methods of using the extracts, comprising at least one green tea catechin selected from the group consisting of epi-gallocatechin, catechin, epicatechin, epigallocatechin-3-gallate, gallocatechin gallate, epicatechin-3-gallate, catechin gallate, and gallocatechin, wherein the compositions of the disclosure provide greater bioavailability of at least one green tea catechin.
    Type: Application
    Filed: September 2, 2015
    Publication date: August 31, 2017
    Inventor: Roger DUFFIELD
  • Fuel filter and production process
    Patent number: 6458279
    Abstract: A fuel filter having a formulation of a stable intermetallic compound of materials such as tin and antimony. The filter may have an integral porous structure or may be in the form of particles. It removes trace metal ions such as Ca and Na ions.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: October 1, 2002
    Assignee: Klinair Environmental Technologies (Ireland) Limited
    Inventors: Roger Duffield, Randall M. German, Teh Fu Yen, Ronald G. Iacocca