Patents by Inventor Gerard Marchand

Gerard Marchand 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).

  • Multi-directional non-imaging radiations concentrator and/or deconcentrator device
    Patent number: 4697867
    Abstract: The device comprises an extension of a radiation conductor of constant cross-section, having a radiations-confining interface of truncated shape, of which the directrices and generatrices can be any type.According to the invention, said device comprises at least a second radiations-confining interface of conical shape situated inside the first interface, the distance between these two radiations-confining interfaces being substantially constant, and said two interfaces facing in such a way that the radiations are confined between them and propagate towards or from the widened end of the interface opposite the conductor.
    Type: Grant
    Filed: July 1, 1985
    Date of Patent: October 6, 1987
    Inventors: Michel Blanc, Jean Pollard, Gerard Marchand, Rene Henri