Patents by Inventor Marianne L. McKelvy

Marianne L. McKelvy 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).

  • Optical reader/player preventing the unauthorized reading of information-carrying substrates
    Publication number: 20010043533
    Abstract: An optical reader/player for reading and reproducing signals stored in an optical recording medium (CD, DVD, HD-DVD) possessing specific physical characteristics. If the measured characteristics of the polymer of the optical medium do not coincide with those of polymers authorized to be used to make optical recording media for the reader/player, the optical medium will not be read or played.
    Type: Application
    Filed: February 2, 2001
    Publication date: November 22, 2001
    Inventors: Jerry L. Hahnfeld, Walter C. Buzanowski, Mary A. Leugers, Marianne L. McKelvy, Henri-Luc Martin, Thomas J. Wainerdi
  • Tungsten oxide for reversible alkali metal intercalation reactions
    Patent number: 5707556
    Abstract: An improved electrochromic layer containing M.sub.X WO.sub.Y, M.sub.X NiO.sub.Y, M.sub.X VO.sub.Y, M.sub.X MoO.sub.Y, M.sub.XCrO.sub.Y, M.sub.X RuO.sub.Y, M.sub.X IrO.sub.Y, or M.sub.X TiO.sub.Y, where M is selected from the group consisting of alkali metals and alkaline earth metals, X is less than 0.06 and Y is in the range from 2 to 3.2. The layer contains the alkali metal or alkaline earth metal when the electrochromic layer is formed.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: January 13, 1998
    Assignee: The Dow Chemical Company
    Inventors: Susan J. Babinec, Marianne L. McKelvy