Patents by Inventor Louisa Shaefer

Louisa Shaefer 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).

  • Night light
    Patent number: 7874717
    Abstract: A night light design which allows for improved functionality over those heretofore available. The basic design is flexible enough to be adapted for either indoor or outdoor use, and for various brightness levels. Particularly for outdoor use, bulbs of up to 15 watts can be used, providing an increased illumination level. All designs preferably include a light sensing element and a control circuit, wherein the light turns itself on when the ambient lighting levels fall low enough. Also, several preferred embodiments include a variable control, wherein the brightness of the night light can be continuously varied between very dim and full brightness.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: January 25, 2011
    Inventor: Louisa Shaefer
  • Night light
    Patent number: 6390647
    Abstract: A night light design which allows for improved functionality over those heretofore available. The basic design is flexible enough to be adapted for either indoor or outdoor use, and for various brightness levels. Particularly for outdoor use, bulbs of up to 15 watts can be used, providing an increased illumination level. All designs preferably include a light sensing element and a control circuit, wherein the light turns itself on when the ambient lighting levels fall low enough. Also, several preferred embodiments include a variable control, wherein the brightness of the night light can be continuously varied between very dim and full brightness.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: May 21, 2002
    Inventor: Louisa Shaefer
  • Holder for multiple business cards
    Patent number: D392680
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: March 24, 1998
    Inventor: Louisa Shaefer