Patents by Inventor Marcel Breval

Marcel Breval 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).

  • Photoelectric coupler
    Patent number: 4054801
    Abstract: A photo-electric coupler, or isolator, wherein a semiconductor light emitter and a semiconductor photodetector are enclosed in a light transmissive body having a surface covering of light reflective material for reflecting toward the photodetector, incident light from the emitter. The emitter and detector can be disposed face-to-face or side-by-side. The reflective cover can provide an external protective covering for the device or a conventional housing can be used.
    Type: Grant
    Filed: May 23, 1975
    Date of Patent: October 18, 1977
    Assignee: Texas Instruments Incorporated
    Inventors: Marcel Breval, Marc Prudhomme