Patents by Inventor Har'el Rosen

Har'el Rosen 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).

  • Patent number: 4998932
    Abstract: A catheter includes at least two electrical conductors extending from the proximal to the distal ends. A semiconductor chip generator of electromagnetic radiation is located at the distal end and is energized by electrical power supplied by the electrical conductors. The chip may be a laser or include an oscillator for generating electromagnetic radiation at a selected frequency or frequencies. In one embodiment, two chip radiation generators are located distally, each connected to one of the conductors. A third conductor is connected in common to both chips, whereby they may be energized independently. An axial aperture may be provided for a guide wire. A balloon may surround the distal end of the catheter, and may be inflated by way of another axial aperture.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: March 12, 1991
    Assignee: AMT Inc.
    Inventors: Arye Rosen, Har'el Rosen
  • Patent number: 4899204
    Abstract: A light-activated PIN diode switch arrangement is coupled to a source of direct voltage and to a load for control of the flow of load current. The PIN diode switch arrangement is connected so as to be electrically reverse-biased, so that no current flows therethrough. A source of light is coupled to the active portion of the PIN diode switch arrangement for rendering it conductive when flooded with light. High power and low inductance is provided by a configuration in which two PIN diode sets are physically and electrically connected together in a physical and electrical stack by a conductive heat sink. Laser diode arrays above and below the diodes of the stack selectively illuminate the intrinsic region of each diode bath through the adjacent doped region and also directly through the side of the diode.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: February 6, 1990
    Assignee: General Electric Company
    Inventors: Har'el Rosen, Arye Rosen