Patents by Inventor Douglas H. Tulley, Jr.

Douglas H. Tulley, Jr. 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).

  • Microporous films having zoned breathability
    Patent number: 6277479
    Abstract: Breathable microporous films are provided having controlled regional breathability with thick high WVTR regions and thinner low WVTR regions. The zoned breathable microporous films can be made by selectively applying heat and/or pressure to specific regions the microporous film such as by feeding a microporous film through a pair of heated nip rollers with one of the rolls having a raised surface area or by applying a focused stream of hot air. Monolayer microporous films and multilayer films having at least one microporous layer can be treated to impart zoned breathability to the film.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: August 21, 2001
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Stephen Michael Campbell, Howard Martin Welch, Larry Ned Barnett, Jr., Carol Ann Blaney, David Arthur Fell, Sarah Jane Marie Freiburger, William Bela Haffner, Marianne Keevill Leick, Ann Louise McCormack, Douglas H. Tulley, Jr.