Patents by Inventor James B. Stamatoff

James B. Stamatoff 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).

  • Polarization-insensitive interferometric waveguide electrooptic modulator
    Patent number: 4932738
    Abstract: In one embodiment this invention provides a polarization-insensitive interferometric waveguide electrooptic modulator device. In a Mach-Zehnder type of waveguide geometry, one of the divergent optical paths has two sets of electrodes, which apply a horizontal electric field and a vertical electric field, respectively, to a nonlinear optically responsive polymeric medium in the optical path. The polymer medium section between each set of electrodes has a noncentrosymmetric molecular orientation parallel to the respective electric fields.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: June 12, 1990
    Assignee: Hoechst Celanese Corp.
    Inventors: David R. Haas, Hyun-Nam Yoon, Chia C. Teng, Hong-Tai Man, James B. Stamatoff
  • Electrooptic device having a liquid crystalline polymer composite optical component
    Patent number: 4933111
    Abstract: This invention provides an optical medium which consists of a composite of a homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline polymer component.In one embodient this invention provides a sol-gel process for producing a composite of a transparent homogeneous microporous inorganic oxide glass monolith and a liquid crystalline polymer.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: June 12, 1990
    Assignee: Hoechst Celanese Corp.
    Inventors: Alan Buckley, Tessie M. Che, Thomas M. Leslie, James B. Stamatoff, Dagobert E. Stuetz, Donald R. Ulrich
  • Side chain liquid crystalline acrylic copolymers exhibiting nonlinear optical response
    Patent number: 4915491
    Abstract: This invention provides novel acrylic copolymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: April 10, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff
  • Azomethine compositions having nonlinear optical properties
    Patent number: 4906407
    Abstract: In one embodiment this invention provides a novel class of azomethine compounds which exhibit nonlinear optical response, such as 4-(4-dimethylaminobenzylideneamino)-4'-nitrostilbene: ##STR1##
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: March 6, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff
  • Optical light switch or modulator device with a liquid crystalline composite optical component
    Patent number: 4898454
    Abstract: This invention provides an optical medium which consists of a composite of a homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline component. In one embodiment this invention provides a sol-gel process for producing a composite of a transparent homogeneous microporous inorganic oxide glass monolith and a liquid crystalline compound.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: February 6, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Alan Buckley, Tessie M. Che, Thomas M. Leslie, James B. Stamatoff, Dagobert E. Stuetz, Donald R. Ulrich
  • Azomethine compositions having nonlinear optical properties
    Patent number: 4892682
    Abstract: In one embodiment this invention provides a novel class of azomethine compounds which exhibit nonlinear optical response, such as 4-(4-dimethylaminobenzylideneamino)-4'- nitrostilbene: ##STR1##
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: January 9, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff
  • Side chain liquid crystalline polymeric media exhibiting third order nonlinear optical response
    Patent number: 4882402
    Abstract: This invention provides a process for producing a transparent optical medium consisting of a liquid crystalline polymer which exhibits third order nonlinear optical response.Illustrative of an invention optical medium is a transparent film of a side chain liquid crystalline polymer corresponding to the formula: ##STR1## The transparent film has an isotropic molecular configuration with macroscopic centrosymmetry, and exhibits essentially no scattering of a transmitted incident light beam.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: November 21, 1989
    Assignee: Hoechst Celanese Corporation
    Inventors: Thomas M. Leslie, Hyun N. Yoon, Ronald N. DeMartino, James B. Stamatoff
  • Polysiloxane polymers exhibiting nonlinear optical response
    Patent number: 4868250
    Abstract: This invention provides novel polysiloxane polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.
    Type: Grant
    Filed: January 24, 1986
    Date of Patent: September 19, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff, Alan Buckley
  • Side chain liquid crystalline polymers exhibiting nonlinear optical properties
    Patent number: 4855376
    Abstract: This invention provides novel sidechain liquid crystalline polymers which exhibit nonlinear response, and which have utility as a transparent nonlinear optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: August 8, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. De Martino, Hyun-Nam Yoon, James B. Stamatoff
  • Polyvinyl polymers exhibiting nonlinear optical response
    Patent number: 4835235
    Abstract: This invention provides novel polyvinyl polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.
    Type: Grant
    Filed: January 24, 1986
    Date of Patent: May 30, 1989
    Assignee: Hoechst Celanese Corporation
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff, Alan Buckley
  • Liquid crystalline polymer composites
    Patent number: 4828888
    Abstract: This invention provides an optical medium which consists of a composite of a homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline polymer component.In one embodiment this invention provides a sol-gel process for producing a composite of a transparent homogeneous microporous inorganic oxide glass monolith and a liquid crystalline polymer.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: May 9, 1989
    Assignee: Hoecast Celanese Corporation
    Inventors: Alan Buckley, Tessie M. Che, Thomas M. Leslie, James B. Stamatoff, Dagobert E. Stuetz, Doanld R. Ulrich
  • Liquid crystalline composites
    Patent number: 4814211
    Abstract: This invention provides an optical medium which consists of a composite of homogeneous inorganic oxide glass monolith with a microporous structure containing a liquid crystalline component.In one embodiment this invention provides a sol-gel process for producing a composite of a transparent homogeneous microporous inorganic oxide glass monolith and a liquid crystalline compound.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: March 21, 1989
    Assignee: Hoechst Celanese Corporation
    Inventors: Alan Buckley, Tessie M. Che, Thomas M. Leslie, James B. Stamatoff, Dagobert E. Stuetz, Donald R. Ulrich
  • Side chain liquid crystalline polymers exhibiting nonlinear optical response
    Patent number: 4810338
    Abstract: This invention provides novel side chain liquid crystalline polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.
    Type: Grant
    Filed: December 1, 1987
    Date of Patent: March 7, 1989
    Assignee: Hoecast Celanese Corp.
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff, Alan Buckley
  • Side chain liquid crystalline polymeric media exhibiting third order nonlinear optical response
    Patent number: 4796976
    Abstract: This invention provides a process for producing a transparent optical medium consisting of a liquid crystalline polymer which exhibits third order nonlinear optical response.Illustrative of an invention optical medium is a transparent film of a side chain liquid crystalline polymer corresponding to the formula: ##STR1## The transparent film has an isotropic molecular configuration with macroscopic centrosymmetry, and exhibits essentially no scattering of a transmitted incident light beam.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: January 10, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Thomas M. Leslie, Hyun-Nam Yoon, Ronald N. DeMartino, James B. Stamatoff
  • Nonlinear optical devices
    Patent number: 4775215
    Abstract: This invention provides optical devices with an organic nonlinear optical component which is a transparent medium of a wholly aromatic polymer which exhibits a third order nonlinear optical susceptibility .chi..sup.(3) of at least about 1.times.10.sup.-12 esu.Illustrative of an invention embodiment is an ultrafast all-optical gate device with a transparent poly([benzo(1,2-d:4,5-d')bisthiazole-2,6-diyl]-1,4-phenylene) optical component which exhibits a third order nonlinear optical susceptibility .chi..sup.(3) of 10.times.10.sup.-12 esu.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: October 4, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Chia-Chi Teng, James B. Stamatoff, Alan Buckley, Anthony F. Garito
  • Process for producing polymeric media exhibiting third order nonlinear optical response
    Patent number: 4762912
    Abstract: This invention provides a process for producing a transparent optical medium consisting of a liquid crystalline polymer which exhibits third order nonlinear optical response.Illustrative of an invention optical medium is a transparent film of a side chain liquid crystalline polymer corresponding to the formula: ##STR1## The transparent film has an isotropic molecular configuration with macroscopic centrosymmetry, and exhibits essentially no scattering of a transmitted incident light beam.
    Type: Grant
    Filed: October 3, 1986
    Date of Patent: August 9, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Thomas M. Leslie, Hyun-Nam Yoon, Ronald N. DeMartino, James B. Stamatoff
  • Polyoxyalkylene polymers exhibiting nonlinear optical response
    Patent number: 4694066
    Abstract: This invention provides novel polyoxyalkylene polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.
    Type: Grant
    Filed: January 24, 1986
    Date of Patent: September 15, 1987
    Assignee: Celanese Corporation
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon, James B. Stamatoff, Alan Buckley