Patents by Inventor Timothy D. Hatchard

Timothy D. Hatchard 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).

  • Cathode compositions for sodium-ion batteries and methods of making same
    Patent number: 10038187
    Abstract: A cathode composition for a sodium-ion battery. The cathode composition may have the formula NaCr1-xMxO2, where M is one or more metal elements, and x is greater than 0 and less than or equal to 0.5.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: July 31, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Mark N Obrovac, Timothy D Hatchard, Douglas S Iaboni
  • CATHODE COMPOSITIONS FOR SODIUM-ION BATTERIES AND METHODS OF MAKING SAME
    Publication number: 20160049653
    Abstract: A cathode composition for a sodium-ion battery. The cathode composition may have the formula NaCr1-xMxO2, where M is one or more metal elements, and x is greater than 0 and less than or equal to 0.5.
    Type: Application
    Filed: March 27, 2014
    Publication date: February 18, 2016
    Inventors: Mark N Obrovac, Timothy D Hatchard, Douglas S Iaboni
  • Method and apparatus for characterizing high-energy electrochemical cells using power functions obtained from calorimetry
    Patent number: 6833707
    Abstract: Characterizing electrochemical cell components and a response of an electrochemical cell to a specified operating condition involves preparing a sample of an electrode material in contact with an electrolyte. Self-heating, power-temperature or power-time data is obtained for the sample using a calorimetry technique, such as by use of an accelerating rate calorimetry technique or a differential scanning calorimetry technique. A power function is developed for the sample using the self-heating, power-temperature or power-time data. The power function is representative of thermal power per unit mass of the sample as a function of temperature and amount of reactant remaining from a reaction of the sample electrode material and electrolyte.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: December 21, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Jeffery R. Dahn, Dean D. MacNeil, Timothy D. Hatchard