Patents by Inventor Donald L. Krull

Donald L. Krull 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).

  • Scent generator for gas fireplaces
    Patent number: 5524609
    Abstract: Apparatus for releasing a scent upon exposure to heat including a housing formed by a cover member and a base member, a carrier material disposed within the housing and a scented material dispersed in the carrier material. The carrier material has a melting point of at least 185.degree. F. and is both chemically and physically stable at temperatures of up to 550.degree. F. This apparatus is particularly suitable for providing a pleasant scent to a room in association with a gas fireplace.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: June 11, 1996
    Inventor: Donald L. Krull