Patents by Inventor Hans Peter Harri

Hans Peter Harri 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).

  • Stabilizer combination
    Patent number: 5997769
    Abstract: A description is given of novel stabilizer mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims. The novel stabilizer mixtures are suitable for stabilizing organic material, especially textile fiber materials, against damage by light, oxygen and heat.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: December 7, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rolf Tittmann, Francesco Fuso, Gerhard Reinert, Hans Peter Harri
  • Stabilizer combination
    Patent number: 5871669
    Abstract: A description is given of novel stabilizer mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims. The novel stabilizer mixtures are suitable for stabilizing organic material, especially textile fibre materials, against damage by light, oxygen and heat.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: February 16, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rolf Tittmann, Francesco Fuso, Gerhard Reinert, Hans Peter Harri
  • Aqueous textile treatment compositions containing an ultra-violet absorbing agent
    Patent number: 5810889
    Abstract: The present invention provides an aqueous textile treatment composition comprising:a) a non-reactive UVA compound;b) an emulsifier for the UVA compound;c) water, and, optionally,d) a polysiloxane-based product;as well as a method of treating a textile fibre material with this composition. The treated textile fibre material, in addition to having an excellent sun protection factor (SPF) value, may also exhibit improved wash permanence and other desirable properties.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: September 22, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Werner Kaufmann, Rolf Hilfiker, Hanspeter Gysin, Urs Hofer, Robert Truniger, Hans Peter Harri