Patents by Inventor Elna Berg

Elna Berg 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).

  • Inhalation device
    Patent number: 6286506
    Abstract: An inhalation device for use with an inhaler is disclosed. The device includes a dispersion chamber constructed for fluid communication with the inhaler and a suction chamber of variable internal volume in fluid communication with the dispersion chamber. The internal volume of the suction chamber can be increased during use, producing a negative pressure in the dispersion chamber, thereby drawing a substance to be inhaled from the inhaler into the dispersion chamber for subsequent inhalation.
    Type: Grant
    Filed: September 4, 1997
    Date of Patent: September 11, 2001
    Assignee: Astra Aktiebolag
    Inventors: John MacAndrew, William Revell, Paul Robertson, Elna Berg, Magnus Jeppsson
  • Inhalation spacer for aerosol medication
    Patent number: D373630
    Type: Grant
    Filed: July 22, 1994
    Date of Patent: September 10, 1996
    Assignee: AB Astra
    Inventors: Elna Berg, Jan Karlsson