Patents Represented by Attorney Stephen Goldman

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  • Optical fiber splice
    Patent number: 4158477
    Abstract: An optical fiber splice is formed by means of a pair of watch jewels concentrically aligned within a cylindrical ferrule. The plastic is stripped back from a pair of fibers to expose their cores and each core is inserted into one of the jewels for precise alignment.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: June 19, 1979
    Assignee: Internatonal Standard Electric Corporation
    Inventors: Michael J. Phillips, John D. Archer
  • Galium aluminum arsenide graded index waveguide
    Patent number: 4152044
    Abstract: A double heterostructure light emitting device has a graded index optical waveguide formed integrally therein. The integrally formed waveguide collects light from the heterojunction and directs the light in a distinct light pattern on one surface of the device. The rate of variation of the index gradient within the waveguide region determines the geometry of the light pattern. The light output pattern can be conveniently tailored to match the geometry of a wide variety of optical fiber dimensions.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: May 1, 1979
    Assignee: International Telephone and Telegraph Corporation
    Inventor: Yet-Zen Liu
  • Coal suspensions in organic liquids
    Patent number: 4147519
    Abstract: Suspensions of coal dust powder in fuel oil are stabilized against sedimentation by an additive that makes them viscous under conditions of low shear in order to keep the coal in suspension under static conditions while exhibiting relatively low viscosity under high shear conditions to facilitate pumping through long range pipelines by the combination of a suitable surfactant with a gelling grade clay suspending agent.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: April 3, 1979
    Assignee: International Telephone & Telegraph Corp.
    Inventor: Edgar W. Sawyer, Jr.
  • Flexible optical transducer
    Patent number: 4142774
    Abstract: An optical transducer is provided that has a flexible transducer member having a set of grooves in one of its major surfaces. Flexure of the transducer member produces a strain pattern that extends across an optical waveguide in the member. This strain pattern has a pitch that will diffract light of a suitable wavelength propagating in the optical waveguide.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: March 6, 1979
    Assignee: International Standard Electric Corporation
    Inventor: Stephen Wright
  • Dual band waveguide radiator
    Patent number: 4141012
    Abstract: This relates to dual band waveguide radiating element for an antenna. A pair of adjacent rear wall excited waveguide elements have a slot in the common wall between them. This slot contains an excitation element so that the structure operates as a ridge waveguide. The rear wall excitation is at the higher of the two frequencies, e.g. S band, while the ridge waveguide operates at the lower frequency, e.g. L band.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: February 20, 1979
    Assignee: International Standard Electric Corporation
    Inventors: George A. Hockham, Raymond R. Thomas