Patents by Inventor Jose A. Brum

Jose A. Brum 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).

  • Method and device for rapid photo-detection by means of a super-lattice
    Patent number: 4806993
    Abstract: To detect a temporal variation, in particular an ultrashort pulse, in a beam of electromagnetic radiation, this beam is applied to a super-lattice of type II, along its axis of growth, and the voltage between the opposite sides of the network along the same axis is determined. The super-lattice is preferably a composite super-lattice, in particular, with alternate layers of indium arsenide and of gallium antimonide. The method is, in particular, applied in the infrared range.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: February 21, 1989
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Paul Voisin, Jose A. Brum