Patents by Inventor Steven G. Streitel

Steven G. Streitel 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).

  • Aqueous dispersions of fluorescent pigments
    Patent number: 5294664
    Abstract: An aqueous dispersion of a fluorescent pigment comprising: a water insoluble polymer; fluorescent dye; emulsifiers; and water. The polymer comprises: a water insoluble vinyl monomer free of polar groups; vinyl nitrile; a vinyl monomer containing sulfonate groups; and a polar vinyl monomer from the group consisting of: polar acrylate esters; vinyl acetate; polar methacrylate esters and a substituted acrylamide containing hydroxyl or carboxylic ester groups. The invention also relates to a fluorescent pigment and method for preparing the dispersion and pigment.
    Type: Grant
    Filed: September 29, 1992
    Date of Patent: March 15, 1994
    Assignee: Day-Glo Color Corp.
    Inventors: Robert G. Morrison, Jr., Steven G. Streitel, Jeffrey R. Cramm
  • Aqueous emulsions of resins containing fluorescent dyes
    Patent number: 5215679
    Abstract: An aqueous emulsion of a resin which contains a fluorescent dye comprising:______________________________________ INGREDIENTS % BY WEIGHT ______________________________________ A water insoluble 25-50 tetra polymer Fluorescent Dye .1-10 Anionic Emulsifier .2-10 Water Balance ______________________________________with the tetra polymer comprising: ______________________________________ INGREDIENTS % BY WEIGHT ______________________________________ A. A water insoluble vinyl 52-65 monomer free of polar groups. B. Acrylonitrile 25-35 C. A vinyl monomer containing 1.5-4.5 sulfonate groups. D. A polar vinyl 5-15 monomer from the group con- sisting of: 1. Polar acrylate esters 2. Vinyl acetate 3.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: June 1, 1993
    Assignee: Day-Glo Color Corp.
    Inventors: Jeffrey R. Cramm, Steven G. Streitel
  • Polyamide-polyester fluorescent pigments
    Patent number: 4975220
    Abstract: The invention provides improved fluorescent pigment compositions comprising a fluorescent dye combined in a polyamide-polyester thermoplastic resin. The resins are prepared from aromatic polycarboxlic acids and lower aliphatic amino alcohols.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: December 4, 1990
    Assignee: Nalco Chemical Company
    Inventors: Steven G. Streitel, George F. Rueter