Patents by Inventor Richard E. A. Leitz

Richard E. A. Leitz 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).

  • Antioxidant activity profile assay
    Patent number: 6429021
    Abstract: The present invention provides an assay for detecting the presence of an array or a profile of antioxidant activity in any sources or products. In particular, the invention provides a method in which a sample is extracted with a polar, a non-polar and a semi-polar solvent to obtain three extracts; the extracts are chromatographed to get a chemical profile; and the profile is analyzed to determine the presence of antioxidants by directly reacting to a free-radical.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: August 6, 2002
    Assignee: Amway Corporation
    Inventors: Yong Qian, Richard E. A. Leitz, David W. Krempin
  • Balanced fiber composition
    Patent number: 4877627
    Abstract: A nutritional fiber composition which comprises approximately 30 to 48.5% fiber, based on the weight of the entire composition, derived from the fruit and vegetable groups, approximately 30 to 48.5% fiber derived from the cereal group and approximately 3 to 40% fiber from sources other then the fruit, vegetable and cereal groups, wherein at least 10% of the total dietary fiber in the entire composition is soluble dietary fiber.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: October 31, 1989
    Assignee: Nutrilite Products, Inc.
    Inventors: Richard E. A. Leitz, Donald J. Pusateri