Patents by Inventor Armand Rossi

Armand Rossi 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).

  • Zinc coated steel plates coated with a pre-lubricating hydroxysulphate layer and methods for obtaining same
    Patent number: 6528182
    Abstract: The invention concerns a steel plate coated with a metal layer based on zinc and a zinc hydroxysulphate layer, whereof the surface density of sulphur is more than 0.5 mg/m2. The invention also concerns a method for obtaining said plate by treating a zinc coated sheet metal: either in a highly alkaline sulphate solution under polarization; or in a sulphate solution containing Zn2+ ions without polarization. The hydroxysulphate deposit brings about a pre-lubricating effect applicable to operations for forming sheet metal.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: March 4, 2003
    Assignee: Sollac
    Inventors: Alain Bello, Sylviane Wajda, Jacques Petitjean, Armand Rossi
  • Copper dihydrocarbyl dithiophosphyl dithiophosphates, their preparation and their use as additives for lubricants
    Patent number: 5132031
    Abstract: Novel products of the copper dihydrocarbyl dithiophosphyl dithiophosphate type, their preparation and their use are described.These products can be represented by the general formula: ##STR1## in which R particularly represents a substantially hydrocarbon monovalent radical with 1 to 30 carbon atoms, X and Y each represent a hydrogen atom or a substantially hydrocarbon monovalent radical with 1 to 30 carbon atoms, M represents copper in one of its two ordinary degrees of oxidation and n the degree of oxidation. The products according to the invention are usable as additives for lubricants in which they provide an effective protection against wear.
    Type: Grant
    Filed: August 21, 1990
    Date of Patent: July 21, 1992
    Assignee: Institut Francais du Petrole
    Inventors: Maurice Born, Jean-Claude Hipeaux, Valerie Maran, Armand Rossi, Michel Thebault