Patents by Inventor Torwald Aberg

Torwald Aberg 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).

  • Tooth cleaning tablet
    Patent number: 5057305
    Abstract: A tooth cleaning tablet, which tablet is such that when it is chewed in a person's mouth it forms a paste and so enables the person to effect a tooth cleaning operation as though using toothpaste.
    Type: Grant
    Filed: January 22, 1988
    Date of Patent: October 15, 1991
    Assignee: Dentab, Inc.
    Inventor: Torwald Aberg
  • Tooth cleaning tablet
    Patent number: 4753792
    Abstract: A tooth cleaning tablet which is self-foaming and self-cleansing on chewing and which includes a self-foaming effervescent couple composition which enables the tablet readily to form a foam on chewing without the need for agitation with a toothbrush and also without the need to suck air into the mouth, the self-foaming effervescent couple composition comprising a carboxylic acid, an alkali metal carbonate salt, a wetting agent such as sodium lauryl sulphate, and a swelling agent such as zanthan gum.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: June 28, 1988
    Inventor: Torwald Aberg