Patents by Inventor Ruben J. Hernandez

Ruben J. Hernandez 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).

  • Method for the preparation of transparent cross-linked polymers from grain flour
    Patent number: 6045868
    Abstract: A method wherein grain flour proteins are cross-linked with aldehydes and bleached with a bleaching agent to form cross-linked transparent polymers is described. The process uses ethanol and water for the extraction at acid or basic pH's and optionally heating with or without a reducing agent to provide the polymers to be bleached and cross-linked. The polymers are particularly useful as films for packaging.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: April 4, 2000
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Luis M. Rayas, Ruben J. Hernandez
  • Device for detecting oxygen with oxidase
    Patent number: 5804401
    Abstract: A method and device (10) for removing oxygen using a reduced oxidase enzyme and for providing a calorimetrically detectable signal of the presence of the oxygen. A reduced laccase or ascorbate oxidase is preferably provided with a substrate which reduces the oxidase. Color is generated which can be detected visually or by other means such as a spectrophotometer. The method and device are particularly useful in the food, pharmaceutical and biological industries.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: September 8, 1998
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Alicia E. Gardiol, Ruben J. Hernandez, Bruce R. Harte
  • Method and device for reducing oxygen with a reduced oxidase with color formation
    Patent number: 5654164
    Abstract: A method and device for removing oxygen using a reduced oxidase enzyme and for providing a colorimetrically detectable signal of the presence of the oxygen is disclosed. A reduced laccase or ascorbate oxidase is preferably provided with a substrate which reduces the oxidase. Color is generated which can be detected visually or by other means such as a spectrophotometer. The method and device are particularly useful in the food, pharmaceutical and biological industries.
    Type: Grant
    Filed: June 13, 1996
    Date of Patent: August 5, 1997
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Alicia E. Gardiol, Ruben J. Hernandez, Bruce R. Harte