Patents by Inventor Donna L. Ronco

Donna L. Ronco 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).

  • Cosmetics containing thermally-inhibited starches
    Patent number: 5871756
    Abstract: Thermally-inhibited starches and flours are used in cosmetic compositions such as skin and hair care products as emulsifiers, thickeners, and aesthetic control agents. The starch or flour is inhibited by dehydrating the starch or flour to anhydrous or substantially anhydrous and then heat treating the dehydrated starch or flour for a time and at a temperature sufficient to inhibit the starch or flour and improve its viscosity stability when dispersed in water. The dehydration may be a thermal or a non-thermal dehydration (e.g., by alcohol extraction or freeze-drying). Preferably, the pH of the starch or flour is adjusted to a neutral or above (e.g., pH 8-9.5) prior to the dehydration and heat treatment.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: February 16, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Roger Jeffcoat, Joseph Pasapane, Donna L. Ronco, Daniel B. Solarek, Douglas J. Hanchett
  • Cosmetic compositions containing hydrophobic starch derivatives
    Patent number: 5776476
    Abstract: Cosmetic compositions useful in skin care are provided containing an effective aesthetic enhancing amount of calcium salt starch derivatives having the following formula: ##STR1## where ST is the starch base material, R is a dimethylene group and R' is a substituent hydrocarbon group having 10 to 16 carbon atoms.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: July 7, 1998
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Robert L. Billmers, Daniel B. Solarek, Maria Tolchinsky, Donna L. Ronco, Joseph Pasapane