Patents by Inventor Andre Roos

Andre Roos 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).

  • Electric particle detector for the detection of fire
    Patent number: 4698586
    Abstract: The sensor 1 has its point of operation towards the Townsend discharge zone, and the collection of ions causes an increase in the current passing through it. The electrodes of the sensor are formed by wires bent in the shape of an alpha.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: October 6, 1987
    Assignee: PGEP Professional General Electric Corp.
    Inventors: Andre Roos, Daniel Dutertre-Laduree, Max Goldman, Alice Goldman