Patents by Inventor Jacob Dror

Jacob Dror 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 of making hollow waveguides
    Patent number: 5605716
    Abstract: A method of making a hollow waveguide for transmitting electromagnetic radiation includes: filling voids on the inner surface of an insulator tube with a coating of a void-filling, hydrophylic material having a free pair of electrons and capable of complexing metal ions; applying a solution of a metal salt over the void-filling material to form a metal complex with the void-filling material; reducing the metal complex to a pure metal layer; and depositing a dielectric film on the pure metal layer.
    Type: Grant
    Filed: December 4, 1995
    Date of Patent: February 25, 1997
    Assignee: Ramot University Authority for Applied Research & Development
    Inventors: Nathan Croitoru, Jacob Dror, Alexandra Inberg
  • Hollow waveguide tips for controlling beam divergence and method of making such tips
    Patent number: 5497441
    Abstract: A hollow waveguide for guiding laser energy, includes a proximal end for receiving the laser energy and a distal end terminating in a distal tip for delivering the laser energy to a working area. The distal end of the hollow waveguide includes an annular, converging, inner surface converging the laser energy towards the distal tip such as to concentrate the laser energy delivered through the distal tip to the working area. Also described are methods of making the hollow waveguide.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: March 5, 1996
    Assignee: Ramot University Authority for Applied Research & Industrial Development Ltd.
    Inventors: Nathan Croitoru, Jacob Dror, Israel Gannot, Reuben Dahan
  • Laser beam waveguide and laser beam delivery system including same
    Patent number: 5497440
    Abstract: A laser beam waveguide particularly useful for transmitting infrared laser radiation includes a flexible, hollow plastic tube; a metal layer on the inner surface of the hollow plastic tube; a thin dielectric film on the inner surface of the metal layer; and a flexible layer over the outer surface of the hollow plastic tube capable of absorbing infrared radiation and preventing kinking of the hollow plastic tube.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: March 5, 1996
    Assignee: Ramot University Authority For Applied Research & Industrial Development Ltd.
    Inventors: Nathan Croitoru, Jacob Dror, Isaac Kaplan, Israel Gannot
  • Hollow fiber waveguide and method of making same
    Patent number: 4930863
    Abstract: A hollow fiber waveguide particularly useful for transmitting electromagnetic radiation in the infrared and visible range, comprises a hollow tube, a metal layer on the inner surface of the hollow tube, and a thin dielectric film over the metal layer.
    Type: Grant
    Filed: April 24, 1989
    Date of Patent: June 5, 1990
    Assignee: Rauiot University Authority for Applied Research and Industrial Development Ltd.
    Inventors: Natan Croitoriu, Jacob Dror, Ephraim Goldenberg, David Mendelovic, Ganot Israel