Patents by Inventor Robert J. Ferris

Robert J. Ferris 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).

  • Multilayer analytical element containing niacinamide and method for the determination of ethanol
    Patent number: 5429932
    Abstract: A multilayer analytical element has been prepared for accurate and rapid colorimetric determination of ethanol in aqueous specimens using alcohol dehydogenase and an oxidized nicotinamide coenzyme. The element includes two reagent layers beneath a porous spreading layer. The element also contains niacinamide in one or more layers to reduce the interference from alcohols other than ethanol.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: July 4, 1995
    Assignee: Eastman Kodak Company
    Inventors: Richard L. Detwiler, Robert J. Ferris
  • Work vehicle, toy, replica and/or display screen with virtual model thereof
    Patent number: D958196
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: July 19, 2022
    Assignee: DEERE & COMPANY
    Inventors: Nathan A. Mariman, Robert J. Ferris, David A. Scott
  • Tank for work vehicle
    Patent number: D987543
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: May 30, 2023
    Assignee: DEERE & COMPANY
    Inventors: Nathan A. Mariman, Robert J. Ferris, David A. Scott
  • Tank for work vehicle
    Patent number: D987544
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: May 30, 2023
    Assignee: DEERE & COMPANY
    Inventors: Nathan A. Mariman, Robert J. Ferris, David A. Scott