Patents by Inventor Michael J. Johnstone

Michael J. Johnstone 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).

  • Button cell battery pack with air access channel
    Patent number: 6938775
    Abstract: A battery pack suitable for use with button cell batteries. The battery pack includes a flexible card and a cover rotatably fixed relative to said flexible card. A backing is interposed between the card and said cover, and fixed relative to said card. The backing and cover define an enclosed space interposed between the cover and the backing for receiving batteries. Batteries disposed in the space are enclosed by the cover and backing. An air access channel formed in the backing diffuses air to the batteries.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: September 6, 2005
    Assignee: Rovcal, Inc.
    Inventors: Robert C. Gaffney, Rodney S. McKenzie, Marc L. Syvertsen, Jeffrey W. Schmoeger, Michael J. Johnstone, Robert G. Reidl, Jeffrey A. Poirier, Robert G. LaMasney, Ross J. Mack
  • Button cell battery pack with air access channel
    Publication number: 20040011698
    Abstract: A battery pack suitable for use with button cell batteries. The battery pack includes a flexible card and a cover rotatably fixed relative to said flexible card. A backing is interposed between the card and said cover, and fixed relative to said card. The backing and cover define an enclosed space interposed between the cover and the backing for receiving batteries. Batteries disposed in the space are enclosed by the cover and backing. An air access channel formed in the backing diffuses air to the batteries.
    Type: Application
    Filed: July 8, 2003
    Publication date: January 22, 2004
    Inventors: Robert C. Gaffney, Rodney S. McKenzie, Marc L. Syvertsen, Jeffrey W. Schmoeger, Michael J. Johnstone, Robert G. Riedl, Jeffrey A. Poirier, Robert G. LaMasney, Ross J. Mack