Patents by Inventor David L. Hauge

David L. Hauge 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).

  • Method for foliage and other plant material dye coloration preservation and topical seal coating
    Patent number: 5807604
    Abstract: A method for manufacturing long-lasting decorative items from foliage and other natural plant materials by infusion with an aqueous ethylene glycol solution of tartrazine yellow dye, either singly or with co-dye colorants, about 0.1 to 1.6 g/L dissolved CO.sub.2 and optional low concentrations of a soluble potassium salt, followed by removal of excess solution and application of a topical water-based organic sealant.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: September 15, 1998
    Assignee: Preserved Botanicals, Inc.
    Inventors: Jeffrey L. Dokkestul, David L. Hauge, Leo A. Ochrymowycz
  • Method for foliage and other plant material dye coloration, preservation and topical seal coating
    Patent number: 5693361
    Abstract: A method for manufacturing long-lasting decorative items from foliage and other natural plant materials by infusion with an aqueous ethylene glycol solution of tartrazine yellow dye, either singly or with co-dye colorants, about 0.1 to 1.6 g/L dissolved CO.sub.2 and optional low concentrations of a soluble potassium salt, followed by removal of excess solution and application of a topical water-based organic sealant.
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: December 2, 1997
    Assignee: Preserved Botanicals, Inc.
    Inventors: Jeffrey L. Dokkestul, David L. Hauge, Leo A. Ochrymowycz