Patents by Inventor Michel E. Royer

Michel E. Royer 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 producing a design composed of two different materials on the surface of an object
    Patent number: 4445982
    Abstract: A process for producing on an object a decoration which includes two different visible materials, said process including at least one cycle of the steps of applying a masking material to at least one region of the outer surface of the object, simultaneously machining the mask and the underlying base material over at least a portion of the region, and coating the machined portion of the underlying base material with a different material.
    Type: Grant
    Filed: February 4, 1983
    Date of Patent: May 1, 1984
    Assignee: S. T. Dupont
    Inventor: Michel E. Royer
  • Stratified corrosion-resistant complex
    Patent number: 4439499
    Abstract: The present invention relates to a stratified, corrosion-resistant complex comprising a metal substrate and an outer layer made of a noble material. According to the invention the substrate is composed of an alloy having, by weight at least 45% nickel, at least 7% chromium, and at least 7% molybdenum, all the other components of the substrate representing at most 15% of the alloy.The invention is particularly useful for making the backs of watch cases.
    Type: Grant
    Filed: February 23, 1983
    Date of Patent: March 27, 1984
    Assignee: S. T. Dupont
    Inventor: Michel E. Royer
  • Liquefied gas apparatus
    Patent number: 4177646
    Abstract: A liquefied gas apparatus, in particular a gas lighter for smokers, is disclosed, utilizing a vaporizer-pressure reducer assembly including a pressure reducing device situated generally within a vaporizer. All solid materials with which the assembly is in contact have a thermal conductivity in the range 0.3 to 5 kcal/m/h/.degree. C.
    Type: Grant
    Filed: November 17, 1977
    Date of Patent: December 11, 1979
    Assignee: S. T. Dupont
    Inventors: Laurent J. Guadagnin, Claude R. Grossiord, John A. Jensen, Antoine Kawam, Jacques M. Mouchet, Michel E. Royer