Patents by Inventor I. David Hill

I. David Hill 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).

  • Waterproof shoe construction and manufacture
    Patent number: 4819345
    Abstract: A waterproof shoe construction and its method of manufacture is disclosed. The shoe has a liner which is impervious to liquid water but pervious to water vapor, a first innersole and a second innersole with a rib. There is a film impervious to liquid water but pervious to water vapor cemented between the first and second innersoles. A horizontal stitch connects the shoe side panels and the rib of the second innersole between the walls of a channel-shaped welt top, which welt bottom is cemented to the top of an outersole. The method of manufacture is a special blend of stitch down and cement construction techniques which allows for a comfortable, waterproof shoe at a lower manufacturing cost.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: April 11, 1989
    Assignees: Starensier, Inc., Enka America Inc.
    Inventors: John J. Mulcahy, I. David Hill
  • Athletic shoe
    Patent number: D281926
    Type: Grant
    Filed: June 24, 1983
    Date of Patent: December 31, 1985
    Assignee: Wolverine World Wide, Inc.
    Inventor: I. David Hill
  • Athletic shoe
    Patent number: D281927
    Type: Grant
    Filed: August 10, 1983
    Date of Patent: December 31, 1985
    Assignee: Wolverine World Wide, Inc.
    Inventor: I. David Hill