Patents by Inventor Marianne Reignier

Marianne Reignier 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).

  • Baths and process for the chemical polishing of stainless steel surfaces
    Patent number: 5599399
    Abstract: Process for chemical polishing of austenitic stainless steel surfaces using chemical polishing baths effective at a slow rate of reaction. The baths include in an aqueous solution a mixture of hydrochloric acid, nitric acid and phosphoric acid, an optionally substituted hydroxybenzoic acid, at least one quaternary ammonium salt and an additive chosen from perchloric acid and water-soluble salts of perchloric acid.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: February 4, 1997
    Assignee: Solvay et Cie (Societe Anonyme)
    Inventors: Francois Dujardin, Marianne Reignier, Nathalie Barthelemy
  • Baths and process for chemical polishing of stainless steel surfaces
    Patent number: 5135610
    Abstract: Baths for the chemical polishing of stainless steel surfaces containing, in aqueous solution, a mixture of hydrochloric acid, phosphoric acid, nitric acid and of sulphosal cylic acid and at least one abietic compound.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: August 4, 1992
    Assignee: Solvay & Cie
    Inventors: Daniel Tytgat, Marianne Reignier, Francois Dujardin
  • Process for the production of electricity in a fuel cell, and fuel cell
    Patent number: 4783381
    Abstract: Hydrogen peroxide (8) is introduced at the interface of an anode (5) and an alkaline anolyte (3) of a fuel cell containing, in addition, an acid catholyte (4), isolated from the anolyte by a separator which is permeable to ions (2).
    Type: Grant
    Filed: July 9, 1987
    Date of Patent: November 8, 1988
    Assignee: Interox (Societe Anonyme)
    Inventors: Daniel Tytgat, Marianne Reignier, Francois Dujardin