Patents by Inventor Martin P. Birrittella

Martin P. Birrittella 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).

  • Shoe construction with resilient, absorption and visual components based on spherical pocket inclusions
    Patent number: 4972611
    Abstract: An athletic shoe with rebound characteristics thereof formed by a first class of hollow core spheres (32, 34, 36) of high resilience mounted in pockets (30A, 30B, 30C) of selected sole regions and a second class of hollow core spheres (38) mounted in exposed heel end pockets for visibility and affording a non-resilient absorption shoe as a whole being very lightweight with the inclusion of such hollow spheres and readily manufacturable therewith.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: November 27, 1990
    Assignee: Ryka, Inc.
    Inventors: Henry D. Swartz, Martin P. Birrittella