Patents by Inventor Joseph D. Mitchell

Joseph D. Mitchell 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).

  • Breakage-resistant baseball bat and production thereof
    Patent number: 6471608
    Abstract: A baseball bat which meets Major League specifications is fabricated from porous red oak wood. The pores of the handle portion of the bat contain an impregnation oil. The resultant bat provides greater ball-hitting power while having greater resistance to breakage. The process for producing the bat involves slow and uniform drying of individual hardwood billets under conditions which provide non-warped dry billets having 4%-8% H2O. The dry billet is then shaped to the bat configuration and impregnated with a penetrating oil while standing upright in a vacuum/pressure chamber.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: October 29, 2002
    Inventor: Joseph D. Mitchell
  • Device for picking up and dispensing baseballs
    Patent number: D580999
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: November 18, 2008
    Inventor: Joseph D. Mitchell