Patents by Inventor Douglas W. Dill

Douglas W. Dill 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).

  • Removable coatings which prevent penetration from felt tip marking inks
    Patent number: 4241141
    Abstract: A method for protecting painted and other surfaces from being permanently marked by graffiti and particularly markings of flexible tip permanent marking pens comprising coating the surface with a removable composition consisting essentially of from 10 to 35% by weight of a polymer having a monomer content of from 25-70% by weight of a hard monomer, 15-50% by weight of a soft monomer, and 15-30% by weight of an acid monomer, the polymer having been solubilized with sodium hydroxide, potassium hydroxide, or mixtures thereof, from 0-15% of a potassium or sodium salt of a maleic anhydride adduct with a mixed alpha olefin having chain lengths of more than 30 carbon atoms, from 0 to 2% of a coalescing solvent selected from the group consisting of diethylene glycol monoethyl ether, diethylene glycol monobutyl ethyl and mixtures thereof; from 0 to 3% of defoamers, leveling agents, and mixtures thereof; and 90 to 45% by weight water, the composition having an MFT of less than 30.degree. C. and a pH of from 7.0 to 10.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: December 23, 1980
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: Douglas W. Dill
  • Low temperature glazing method
    Patent number: 4053664
    Abstract: A low temperature glazing composition consisting essentially of a mixture of 25-75% by weight of an aqueous dispersion of an acrylic resin having a monomer composition of 40-85% by weight methyl methacrylate, 45-15% by weight butyl acrylate and 0-15% by weight methacrylic acid, this dispersion having 15-25% non-volatiles and a pH of 8.5-10.5; and 75-25% by weight of a powdered resin composition having a particle size within the range of 100-400 mesh consisting essentially of 100-80% by weight of a resin having a monomer composition of 60-85% by weight methyl methacrylate and 40-15% by weight butyl acrylate having a molecular weight of 10,000-20,000 and a Tg greater than 45.degree. C and 0-20% by weight of a pigment.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: October 11, 1977
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: Douglas W. Dill
  • Low temperature glazing composition
    Patent number: 3983060
    Abstract: A low temperature glazing composition consisting essentially of a mixture of 25-75% by weight of an aqueous dispersion of an acrylic resin having a monomer composition of 40-85% by weight methyl methacrylate, 45-15% by weight butyl acrylate and 0-15% by weight methacrylic acid, this dispersion having 15-25% non-volatiles and a pH of 8.5-10.5; and 75-25% by weight of a powdered resin composition having a particle size within the range of 100-400 mesh consisting essentially of 100-80% by weight of a resin having a monomer composition of 60-85% by weight methyl methacrylate and 40-15% by weight butyl acrylate having a molecular weight of 10,000-20,000 and a Tg greater than 45.degree.C and 0-20% by weight of a pigment.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: September 28, 1976
    Assignee: S. C. Johnson & Son, Inc.
    Inventor: Douglas W. Dill