Patents by Inventor Jean P. Bacher

Jean P. Bacher 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).

  • Process for the preparation of hydroxyphenyl-1,3,5-triazines
    Patent number: 5478935
    Abstract: A simple process for the preparation of a triazine of formula (1) is described, which comprises converting a dihydrotriazine of formula (2) with a reducing agent to a 1,3,5-triazine of formula (1).The triazines obtained by the novel process are suitable UV absorbers for organic materials, in particular for polyester fiber materials, or suitable starting materials for the preparation of UV absorbers.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: December 26, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Dieter Reinehr, Jean P. Bacher