Patents by Inventor Deepti Pant

Deepti Pant 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: 7327925
    Abstract: A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated multifunctional alcohol and at least one photoinitiator. The said composition has high photo contrast, high curing speed, controllable refractive index, low curing shrinkage, high thermo-optic coefficient, low volatility and high viscosity. A waveguide device is formed by patterning the photosensitive composition.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: February 5, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Fang Wang, Baopei Xu, Indira S. Pottebaum, Chuck C. Xu, Deepti Pant, Chris E. Osuch, Louay A. Eldada
  • Publication number: 20060229379
    Abstract: A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated multifunctional alcohol and at least one photoinitiator. The said composition has high photo contrast, high curing speed, controllable refractive index, low curing shrinkage, high thermo-optic coefficient, low volatility and high viscosity. A waveguide device is formed by patterning the photosensitive composition.
    Type: Application
    Filed: June 2, 2006
    Publication date: October 12, 2006
    Inventors: Fang Wang, Baopei Xu, Indira Pottebaum, Chuck Xu, Deepti Pant, Chris Osuch, Louay Eldada
  • Patent number: 7078445
    Abstract: A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated multifunctional alcohol and at least one photoinitiator. The said composition has high photo contrast, high curing speed, controllable refractive index, low curing shrinkage, high thermo-optic coefficient, low volatility and high viscosity. A waveguide device is formed by patterning the photosensitive composition.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: July 18, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Chuck C. Xu, Deepti Pant, Chris E. Osuch, Louay A. Eldada
  • Patent number: 7011932
    Abstract: The invention relates to a process a process for forming single-mode, organic waveguides employing organic polymeric materials. The process reduces dissolved and gaseous oxygen content to very low quantities, resulting in production of waveguides having superior properties and manufacturability. Also provided is a process for preventing loss of light due to cores having flared ends. A waveguide is produced by sequentially a layer of a liquid, photosensitive buffer and clad composition to a surface of a substrate; deoxygenating under vacuum; overall exposing under an inert gas actinic radiation to partially polymerize the compositions below a full curing.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: March 14, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Paul M. Ferm, Kevin Battell, Karl W. Beeson, Macrae Maxfield, Deepti Pant, Lawrence W. Shacklette
  • Patent number: 6929899
    Abstract: A photosensitive composition having low absorption loss at 1,300-1,610 nm and is suitable for practical waveguide devices. The composition comprises at least one (meth)acrylate prepared from a fluorinated monomer or polymer having minimum two hydroxyl groups, at least one multifunctional non-fluorinated (meth)acrylate and at least one photoinitiator. An optical coating on a variety of substrates is obtained by exposing the photosensitive composition to actinic radiation such as UV light. An optical waveguide device is fabricated by patterning the photosensitive composition on a substrate.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: August 16, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Indira S. Pottebaum, Chuck C. Xu, Chris E. Osuch, Deepti Pant, Louay A. Eldada
  • Publication number: 20040071386
    Abstract: This invention pertains to a novel design for an integrated optical communications device utilizing the thermo-optic effect to condition, manipulate, or alter an optical signal transmitted thereto.
    Type: Application
    Filed: April 9, 2003
    Publication date: April 15, 2004
    Inventors: Joris van Nunen, Alan D. Heaney, Chuck C. Xu, Deepti Pant, Louay Eldada
  • Patent number: 6542684
    Abstract: A single mode optical waveguide which is lithographically formed and employs polymeric materials having low propagation loss. The optical waveguide has a substrate, a polymeric, buffer layer having an index of refraction nb disposed on a surface of the substrate, a patterned, light-transmissive core layer having an index of refraction nc disposed directly on a surface of the cladding layer, and an overcladding layer having an index of refraction no on a top surface of the core, side walls of the core, and exposed portions of the buffer layer, with nb<no<nc and &Dgr;n=nc−no.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: April 1, 2003
    Assignee: Corning Incorporated
    Inventors: Louay Eldada, Deepti Pant, Karl Beeson, George Boudoughian
  • Publication number: 20030026569
    Abstract: A single mode optical waveguide which is lithographically formed and employs polymeric materials having low propagation loss. The optical waveguide has a substrate, a polymeric, buffer layer having an index of refraction nb disposed on a surface of the substrate, a patterned, light-transmissive core layer having an index of refraction nc disposed directly on a surface of the cladding layer, and an overcladding layer having an index of refraction no on a top surface of the core, side walls of the core, and exposed portions of the buffer layer, with nb<no<nc and &Dgr;n=nc−no.
    Type: Application
    Filed: May 1, 2001
    Publication date: February 6, 2003
    Inventors: Louay Eldada, Deepti Pant, Karl Beeson, George Boudoughian
  • Publication number: 20020164547
    Abstract: The invention relates to a process a process for forming single-mode, organic waveguides employing organic polymeric materials. The process reduces dissolved and gaseous oxygen content to very low quantities, resulting in production of waveguides having superior properties and manufacturability. Also provided is a process for preventing loss of light due to cores having flared ends. A waveguide is produced by sequentially a layer of a liquid, photosensitive buffer and clad composition to a surface of a substrate; deoxygenating under vacuum; overall exposing under an inert gas actinic radiation to partially polymerize the compositions below a full curing.
    Type: Application
    Filed: May 1, 2001
    Publication date: November 7, 2002
    Inventors: Paul M. Ferm, Kevin Battell, Karl W. Beeson, Macrae Maxfield, Deepti Pant, Lawrence W. Shacklette
  • Publication number: 20020136526
    Abstract: A photosensitive composition having low absorption loss at 1,300-1,610 nm and is suitable for practical waveguide devices. The composition comprises at least one (meth)acrylate prepared from a fluorinated monomer or polymer having minimum two hydroxyl groups, at least one multifunctional non-fluorinated (meth)acrylate and at least one photoinitiator. An optical coating on a variety of substrates is obtained by exposing the photosensitive composition to actinic radiation such as UV light. An optical waveguide device is fabricated by patterning the photosensitive composition on a substrate.
    Type: Application
    Filed: January 18, 2002
    Publication date: September 26, 2002
    Inventors: Indira S. Pottebaum, Chuck C. Xu, Chris E. Osuch, Deepti Pant, Louay A. Eldada
  • Publication number: 20020106582
    Abstract: A photosensitive composition suitable for practical waveguide devices is provided. The photosensitive composition comprises at least one multifunctional acrylate prepared from a fluorinated multifunctional alcohol and at least one photoinitiator. The said composition has high photo contrast, high curing speed, controllable refractive index, low curing shrinkage, high thermo-optic coefficient, low volatility and high viscosity. A waveguide device is formed by patterning the photosensitive composition.
    Type: Application
    Filed: January 18, 2002
    Publication date: August 8, 2002
    Inventors: Chuck C. Xu, Deepti Pant, Chris E. Osuch, Louay A. Eldada