Patents by Inventor Elizabeth Anne Keifer

Elizabeth Anne Keifer 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).

  • Method and apparatus for non-abrasive cushioning seal of assisted breathing devices
    Patent number: 6769432
    Abstract: A method and apparatus for preventing abrasion on an infant's nose and adjacent areas when used in conjunction with respiratory administration devices.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: August 3, 2004
    Assignee: Hamilton Medical, Inc.
    Inventor: Elizabeth Anne Keifer
  • Nostril insert pad
    Patent number: D481122
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: October 21, 2003
    Assignee: Hamilton Medical, Inc.
    Inventor: Elizabeth Anne Keifer