Patents by Inventor Howard W. Wright

Howard W. Wright 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).

  • Color changing toothpaste
    Patent number: 6419902
    Abstract: Disclosed is a color changing toothpaste which contains color reagents for interacting to provide a color change indicative of tooth brushing time. The color reagents comprise two separate color components which may be an FD&C dye, and FD&C lake or a natural food color, the two separate color components being adapted to interact after a predetermined brushing time to produce a third color. Optionally, the toothpaste may contain up to approximately 0.05% by weight of a foaming agent and other components such as a fluoride and a flavoring agent or flavor burst component.
    Type: Grant
    Filed: July 29, 1997
    Date of Patent: July 16, 2002
    Inventor: Howard W. Wright
  • All weather safety whistle and sound generator
    Patent number: 5329872
    Abstract: An all weather safety whistle and sound generator is provided having a mouthpiece and a sound producing opening for emitting sound when air is blown into the mouthpiece, and having a cowling structure covering over the sound producing opening protecting the opening from substances exterior to the apparatus while simultaneously enabling the opening to produce sound.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: July 19, 1994
    Inventor: Howard W. Wright