Patents by Inventor Patrick Prost-Tournier

Patrick Prost-Tournier 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 chemical deposition of gold by autocatalytic reduction
    Patent number: 4307136
    Abstract: An improvement is disclosed for the nonelectrolytic deposition of gold by autocatalytic chemical reduction of a deposition bath containing a soluble gold salt in a strongly alkaline medium by initially adding to the deposition bath an effective amount of a metal from Group III, IV or V of the periodic classification of elements in the form of a soluble salt.
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: December 22, 1981
    Assignee: Engelhard Minerals & Chemicals Corp.
    Inventors: Patrick Prost-Tournier, Christiane Allemmoz