Patents by Inventor Thierry Wetzel

Thierry Wetzel 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).

  • Patent number: 6977238
    Abstract: Stable aqueous dispersions of foaming surfactants are prepared by starting with a pre-formed substantially uniform surfactant composition which contains one or more foaming surfactants, and one or more fatty amphiphiles. The dispersion contains from 5 to 50 wt % of the surfactant composition and from 50 to 95 wt % water. A hydrocolloid is also preferably included in the dispersion. Emollients are also conveniently included in the aqueous dispersion.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: December 20, 2005
    Assignee: Imperial Chemical Industries PLC
    Inventors: Thierry Wetzel, Marie Claire Leona Hilda Taelman
  • Patent number: 6831107
    Abstract: Personal care or cosmetic oil in water emulsions include an oil emulsifier and a combination of a Xanthan polysaccharide and a polyglucomannan polysaccharide to provide enhanced stability even at low emulsifier stabiliser levels. The emulsifier stabiliser system provides stable emulsions without dominating system rheology, particularly viscosity. Thus, the emulsions can have a low viscosity suitable for formulation as milks or thin lotions, or can be thickened, desirably by thickening agents other than the Xanthan and/or polyglucomannan, to provide emulsion creams or gels. This enables the system to be used very flexibly in end use applications. The emulsifier is desirably a non-ionic emulsifier and particularly is a combination of a low HLB and a high HLB emulsifier and can be formulated with conventional alcohol ethoxylate surfactants or from non-EO surfactants e.g. sucrose ester high HLB surfactants and citrate or sorbitan ester low HLB surfactants.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: December 14, 2004
    Inventors: Christian Joseph Dederen, Thierry Wetzel, Guido Serrien
  • Publication number: 20020065328
    Abstract: Personal care or cosmetic oil in water emulsions include an oil emulsifier and a combination of a Xanthan polysaccharide and a polyglucomannan polysaccharide to provide enhanced stability even at low emulsifier stabiliser levels. The emulsifier stabiliser system provides stable emulsions without dominating system rheology, particularly viscosity. Thus, the emulsions can have a low viscosity suitable for formulation as milks or thin lotions, or can be thickened, desirably by thickening agents other than the Xanthan and/or polyglucomannan, to provide emulsion creams or gels. This enables the system to be used very flexibly in end use applications. The emulsifier is desirably a non-ionic emulsifier and particularly is a combination of a low HLB and a high HLB emulsifier and can be formulated with conventional alcohol ethoxylate surfactants or from non-EO surfactants e.g. sucrose ester high HLB surfactants and citrate or sorbitan ester low HLB surfactants.
    Type: Application
    Filed: May 29, 2001
    Publication date: May 30, 2002
    Inventors: Christian Joseph Dederen, Thierry Wetzel, Guido Serrien