Patents by Inventor William S. Portzline

William S. Portzline 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).

  • Wrist guard
    Patent number: 5435007
    Abstract: A wrist guard for protecting a wearer's wrist includes a first rigid plate member and a second rigid plate member. The plate members are connected by a hinge such that the first and second plate members pivot relative to each other about an axis generally parallel to a bending axis of the wrist. The hinge accommodates substantially unrestricted downward pivotal movement and a substantially restricted upward pivotal movement.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: July 25, 1995
    Assignee: Rollerblade, Inc.
    Inventors: Jamie L. Kalvestran, William S. Portzline, Bryce G. Rutter, John H. Loudenslager
  • Wrist guard
    Patent number: D360059
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: July 4, 1995
    Assignee: Rollerblade, Inc.
    Inventors: Jamie L. Kalvestran, William S. Portzline, Bryce G. Rutter, John H. Loudenslager
  • Knee guard
    Patent number: D373655
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: September 10, 1996
    Assignee: Rollerblade, Inc.
    Inventors: Jamie L. Kalvestran, William S. Portzline, Bryce G. Rutter, John H. Loudenslager
  • Footwear sole
    Patent number: D944508
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: March 1, 2022
    Assignee: Wolverine Outdoors, Inc.
    Inventor: William S. Portzline
  • Footwear sole
    Patent number: D1001437
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: October 17, 2023
    Assignee: Wolverine Outdoors, Inc.
    Inventor: William S. Portzline
  • Footwear upper
    Patent number: D1017212
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: March 12, 2024
    Assignee: Wolverine Outdoors, Inc.
    Inventor: William S. Portzline
  • Footwear upper
    Patent number: D1020216
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: April 2, 2024
    Assignee: Wolverine Outdoors, Inc.
    Inventor: William S. Portzline
  • Footwear upper
    Patent number: D1025573
    Type: Grant
    Filed: April 15, 2022
    Date of Patent: May 7, 2024
    Assignee: Wolverine Outdoors, Inc.
    Inventor: William S. Portzline