Patents by Inventor Caroline Schäfer

Caroline Schäfer 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).

  • Use of selected polydiorganosiloxanes in fabric softener compositions
    Patent number: 6358913
    Abstract: The invention relates to the use of fabric softener compositions comprising: (a) as active substance, a quaternary ammonium compound of formula (1), in which R is the aliphatic radical of tallow fatty acid, in particular a mono- or polyunsaturated aliphatic C17 radical; and (b) is a nitrogen-free polydiorganosiloxane having terminal silicon-bonded hydroxyl groups; for the treatment of textile fibre materials. The fabric softener compositions impart a soft handle to the treated textile and are readily biodegradable.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: March 19, 2002
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Monika Schaumann, Jürgen Kaschig, Caroline Schäfer, Frank Lee, Erich Rössler, Harald Chrobaczek, Dieter Walz