Patents by Inventor Ronald N. DeMartino

Ronald N. DeMartino 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).

  • Acrylic polymers and copolymers exhibiting nonlinear optical response
    Patent number: 4913844
    Abstract: This invention provides novel isotropic acrylic polymers and 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: January 25, 1988
    Date of Patent: April 3, 1990
    Assignee: Hoechst Celanese Corp.
    Inventor: Ronald N. DeMartino
  • 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
  • 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
  • Condensation polymers exhibiting nonlinear optical response
    Patent number: 4867540
    Abstract: This invention provides novel isotropic condensation polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in optical light switch an light modulator devices.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: September 19, 1989
    Assignee: Hoechst Celanese Corp.
    Inventor: Ronald N. DeMartino
  • Organic nonlinear optical media
    Patent number: 4867538
    Abstract: In one embodiment this invention provides a light switch or light modulator device having a nonlinear optical component which is a blend of organic constituents exhibiting nonlinear optical response.
    Type: Grant
    Filed: March 20, 1987
    Date of Patent: September 19, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Hyun-Nam Yoon, Thomas M. Leslie, Ronald N. DeMartino
  • Acrylic copolymers exhibiting nonlinear optical response
    Patent number: 4865430
    Abstract: This invention provides novel isotropic 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: January 11, 1989
    Date of Patent: September 12, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon
  • Side chain liquid crystalline condensation polymers exhibiting nonlinear optical response
    Patent number: 4851502
    Abstract: This invention provides novel side chain liquid crystalline polymers with a polyester or polyamide main chain structure. An invention polymer exhibits nonlinear optical response, and has utility as a transparent nonlinear optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: July 25, 1989
    Assignee: Hoechst Celanese Corporation
    Inventor: Ronald N. DeMartino
  • 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
  • Condensation polymers exhibiting nonlinear optical response
    Patent number: 4826950
    Abstract: This invention provides novel isotropic condensation polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in optical light switch an light modulator devices.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: May 2, 1989
    Assignee: Hoechst Celanese Corporation
    Inventor: Ronald N. DeMartino
  • 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
  • Acrylic copolymers exhibiting nonlinear optical response
    Patent number: 4808332
    Abstract: This invention provides novel isotropic 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 9, 1987
    Date of Patent: February 28, 1989
    Assignee: Hoechst Celanese Corp.
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon
  • Acrylic copolymers exhibiting nonlinear optical response
    Patent number: 4801670
    Abstract: This invention provides novel isotropic 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: November 16, 1987
    Date of Patent: January 31, 1989
    Assignee: Hoecast Celanese Corp.
    Inventors: Ronald N. DeMartino, Hyun-Nam Yoon
  • 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
  • Side chain liquid crystalline condensation polymers exhibiting nonlinear optical response
    Patent number: 4795664
    Abstract: This invention provides novel side chain liquid crystalline polymers with a polyester or polyamide main chain structure. An invention polymer exhibits nonlinear optical response, and has utility as a transparent nonlinear optical component in optical light switch and light modulator devices.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: January 3, 1989
    Assignee: Hoechst Celanese Corp.
    Inventor: Ronald N. DeMartino
  • Polymers with pendant side chains exhibiting non-linear optical response
    Patent number: 4779961
    Abstract: This invention provides novel polyvinyl polymers with pendant side chains which exhibit nonlinear optical response. The polymers have utility as a transparent optical component of optical switch or light modulator devices.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: October 25, 1988
    Assignee: Hoechst Celanese Corporation
    Inventor: Ronald N. DeMartino
  • Organic nonlinear optical substrates
    Patent number: 4766171
    Abstract: This invention provides organic solid solutions which exhibit nonlinear optical properties.Illustrative of the invention is an optically clear solid solution of poly(N,N-dimethylacrylamide) and 13,13-di(n-hexydecylamino)-14,14-dicyano-4,5,9,10-tetrahydropyrenoquinodim ethane.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: August 23, 1988
    Assignee: Hoechst Celanese Corporation
    Inventor: Ronald N. DeMartino
  • 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
  • Condensation polymers with pendant side chains exhibiting nonlinear optical response
    Patent number: 4757130
    Abstract: This invention provides novel condensation polymers with pendant side chains which exhibit nonlinear optical response. The polymers have utility as a transparent optical component of optical switch or light modulator devices.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: July 12, 1988
    Assignee: Hoechst Celanese Corporaton
    Inventor: Ronald N. DeMartino