Patents by Inventor Anoop Agrawal

Anoop Agrawal 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: 7615267
    Abstract: Radiofrequency attenuator and method. The attenuator includes a pair of transparent windows. A chamber between the windows is filled with molten salt. Preferred molten salts include quarternary ammonium cations and fluorine-containing anions such as tetrafluoroborate (BF4?), hexafluorophosphate (PF6?), hexafluoroarsenate (AsF6?), trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3 C?). Radicals or radical cations may be added to or electrochemically generated in the molten salt to enhance the RF attenuation.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: November 10, 2009
    Assignee: Los Alamos National Security, LLC
    Inventors: Benjamin P. Warner, T. Mark McCleskey, Anthony K. Burrell, Anoop Agrawal, Simon B. Hall
  • Patent number: 7589883
    Abstract: An exterior mirror suitable for use in a vehicular exterior rearview mirror assembly includes a reflective mirror element having a light transmitting substrate with a mirror reflector having a metallic reflective layer coated thereon. A visual indicator display is disposed to the rear of the light transmitting substrate and actuated to emit light when powered. Light emitted by light sources of the display passes through the light transmitting substrate so as to be viewed by a driver of the vehicle equipped with the reflective mirror element. The mirror element has portions of the metallic reflective layer at least partially removed by laser scribing to establish at least partially light transmissive portions of the mirror reflector so that light emitted by light sources, when powered, passes through the respective at least partially light transmissive portions to be viewed by a viewer viewing from the front of the reflective mirror element.
    Type: Grant
    Filed: December 17, 2007
    Date of Patent: September 15, 2009
    Assignee: Donnelly Corporation
    Inventors: Desaraju V. Varaprasad, Mingtang Zhao, Craig A. Dornan, Anoop Agrawal, Pierr-Marc Allemand, Niall R. Lynam
  • Publication number: 20090103162
    Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes. Some of the electrolyte solutions color to red when devices employing the solutions are powered, leading to red or neutral electrooptic devices.
    Type: Application
    Filed: November 6, 2008
    Publication date: April 23, 2009
    Inventors: Anthony K. Burrell, Anoop Agrawal, John P. Cronin, Juan C.L. Tonazzi, Benjamin P. Warner, T. Mark McCleskey
  • Publication number: 20090095408
    Abstract: This invention discloses methods to dispense adhesives for fabricating multiple electrooptic devices. In addition the invention also discloses on how the cavities of these electrooptic devices may be filled by an injection process. The Electrooptic devices of this invention may comprise liquid or solid electrolytes.
    Type: Application
    Filed: November 24, 2008
    Publication date: April 16, 2009
    Applicant: ElectroChromiX Inc.
    Inventors: Robert S. LeCompte, Juan Carlos L. Tonazzi, Anoop Agrawal
  • Patent number: 7479843
    Abstract: Radiofrequency attenuator and method. The attenuator includes a pair of transparent windows. A chamber between the windows is filled with molten salt. Preferred molten salts include quarternary ammonium cations and fluorine-containing anions such as tetrafluoroborate (BF4?), hexafluorophosphate (PF6?), hexafluoroarsenate (AsF6?), trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Radicals or radical cations may be added to or electrochemically generated in the molten salt to enhance the RF attenuation.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: January 20, 2009
    Assignee: Los Alamos National Security, LLC
    Inventors: Benjamin P. Warner, T. Mark McCleskey, Anthony K. Burrell, Anoop Agrawal, Simon B. Hall
  • Publication number: 20080311380
    Abstract: This invention discloses composite materials utilizing high refractive index matrices and their use with phosphors and scintillators. Further, the index of refraction difference between the matrix and the particles is less than 0.15.
    Type: Application
    Filed: June 10, 2008
    Publication date: December 18, 2008
    Applicant: AJJER LLC
    Inventor: Anoop Agrawal
  • Publication number: 20080310007
    Abstract: This invention discloses pre-formed electrochromic films that are used in assembly of electrochromic devices. These films are laminated to conductive substrates to form the electrochromic devices.
    Type: Application
    Filed: June 16, 2008
    Publication date: December 18, 2008
    Inventors: Anoop Agrawal, Juan Carlos L. Tonazzi, Lori L. Adams, John P. Cronin
  • Publication number: 20080291522
    Abstract: An exterior reflective mirror element suitable for a vehicle includes a transparent glass substrate having a reflector and a visual indicator display disposed to the rear of the substrate. The visual indicator display may be part of a blind spot detection and display system of the vehicle wherein the visual indicator display is actuated to emit light responsive to a detection by a blind spot detection detector of the equipped vehicle of an overtaking vehicle in a side lane adjacent the side of the equipped vehicle. The visual indicator display includes at least a first indicator at a first location to the rear of the exterior reflective mirror element. A first portion of the reflector may be at least partially removed at the first location in order to establish an at least partially transmissive first portion of the exterior reflective mirror element at the first location.
    Type: Application
    Filed: April 3, 2008
    Publication date: November 27, 2008
    Applicant: DONNELLY CORPORATION
    Inventors: Desaraju V. Varaprasad, Mingtang Zhao, Craig Allen Dornan, Anoop Agrawal, Pierr-Marc Allemand, Niall R. Lynam
  • Patent number: 7450292
    Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes. Some of the electrolyte solutions color to red when devices employing the solutions are powered, leading to red or neutral electrooptic devices.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: November 11, 2008
    Assignee: Los Alamos National Security, LLC
    Inventors: Anthony K. Burrell, Anoop Agrawal, John P. Cronin, Juan C. L. Tonazzi, Benjamin P. Warner, T. Mark McCleskey
  • Publication number: 20080266642
    Abstract: Electrolyte solutions for electrochromic devices such as rear view mirrors and displays with low leakage currents are prepared using inexpensive, low conductivity conductors. Preferred electrolytes include bifunctional redox dyes and molten salt solvents with enhanced stability toward ultraviolet radiation. The solvents include lithium or quaternary ammonium cations, and perfluorinated sulfonylimide anions selected from trifluoromethylsulfonate (CF3SO3?), bis(trifluoromethylsulfonyl)imide ((CF3SO2)2N?), bis(perfluoroethylsulfonyl)imide ((CF3CF2SO2)2N?) and tris(trifluoromethylsulfonyl)methide ((CF3SO2)3C?). Electroluminescent, electrochromic and photoelectrochromic devices with nanostructured electrodes include ionic liquids with bifunctional redox dyes. Some of the electrolyte solutions color to red when devices employing the solutions are powered, leading to red or neutral electrooptic devices.
    Type: Application
    Filed: September 22, 2006
    Publication date: October 30, 2008
    Inventors: Anthony K. Burrell, Anoop Agrawal, John P. Cronin, Juan C.L. Tonazzi, Benjamin P. Warner, T. Mark McCleskey
  • Publication number: 20080204850
    Abstract: An optical media is provided with an associated persistent electrochromic material. The electrochromic material has at least two states. In a first state, the electrochromic material interferes with the ability of an interrogating laser beam to read data from the optical media, and in a second state, the electrochromic material is substantially transparent, enabling the laser beam to read the disc. Advantageously, the persistent electrochromic material holds a desired optical state without the application of external power. The persistent time period may extend for days, weeks, or years depending on particular constructions, and on application requirements. The optical media has an integrated circuit, which is used to cause the electrochromic material to transition from a first state to the second state. In one example, an integrated circuit acts as the powering circuit for the electrochromic material, as well as providing logic and processing functions.
    Type: Application
    Filed: July 28, 2006
    Publication date: August 28, 2008
    Inventors: Anoop Agrawal, John H. Rilum, John P. Cronin, Juan Carlos Tonazzi Lopez, Paul Atkinson, Rick Marquardt, Steve Parsons
  • Publication number: 20080094685
    Abstract: An exterior mirror suitable for use in a vehicular exterior rearview mirror assembly includes a reflective mirror element having a light transmitting substrate with a mirror reflector having a metallic reflective layer coated thereon. A visual indicator display is disposed to the rear of the light transmitting substrate and actuated to emit light when powered. Light emitted by light sources of the display passes through the light transmitting substrate so as to be viewed by a driver of the vehicle equipped with the reflective mirror element. The mirror element has portions of the metallic reflective layer at least partially removed by laser scribing to establish at least partially light transmissive portions of the mirror reflector so that light emitted by light sources, when powered, passes through the respective at least partially light transmissive portions to be viewed by a viewer viewing from the front of the reflective mirror element.
    Type: Application
    Filed: December 17, 2007
    Publication date: April 24, 2008
    Applicant: Donnelly Corporation
    Inventors: Desaraju Varaprasad, Mingtang Zhao, Craig Dornan, Anoop Agrawal, Pierr-Marc Allemand, Niall Lynam
  • Publication number: 20080074724
    Abstract: This invention focuses on electrooptic devices and in particular on electrochromic devices with many aspects directed towards automotive EC mirrors. There are several ways to improve these products and their processing using this invention and some of the prominent ones are outlined below. This invention improves on the devices by disclosing new compositions for electrodes and methods of depositing them. It also addresses novel ways to provide busbars to power these devices in order to improve their performance. The device processing attributes and performance are also improved by adhesive compositions and solid electrolytes disclosed herein. In addition sensors are also disclosed which are novel for use in electrochromic mirrors. The invention also discloses how the electrolytes comprising ionic liquids have no adverse effect on attributes of commercial EC mirrors and often result in improved performance and/or feature enhancements.
    Type: Application
    Filed: October 29, 2007
    Publication date: March 27, 2008
    Inventors: Anoop Agrawal, Juan Tonazzi, Robert LeCompte, John Cronin
  • Patent number: 7349144
    Abstract: An exterior electrochromic reflective mirror element for a vehicular exterior rearview mirror assembly comprises an electrochromic cross-linked polymeric solid film disposed between a first substrate and a second substrate. The electrochromic cross-linked polymeric solid film contacts a transparent conductive layer of the first substrate and a conductive layer comprising a metallic reflective layer of the second substrate. A visual indicator display is disposed to the rear of said second substrate and is part of a blind spot detection and display system and is actuated to emit light responsive to a detection of another overtaking vehicle in a side lane. Light emitted by the visual indicator display passes through the second substrate, through the electrochromic cross-linked polymeric solid film and through the first substrate to be viewed by a driver of the vehicle equipped with the exterior electochromic reflective mirror element.
    Type: Grant
    Filed: January 16, 2007
    Date of Patent: March 25, 2008
    Assignee: Donnelly Corporation
    Inventors: Desaraju V. Varaprasad, Mingtao Zhao, Craig Allen Dornan, Anoop Agrawal, Niall R. Lynam, Pierr-Marc Allemand
  • Patent number: 7300166
    Abstract: This invention focuses on electrooptic devices and in particular on electrochromic devices with many aspects directed towards automotive EC mirrors. There are several ways to improve these products and their processing using this invention and some of the prominent ones are outlined below. This invention improves on the devices by disclosing new compositions for electrodes and methods of depositing them. It also addresses novel ways to provide busbars to power these devices in order to improve their performance. The device processing attributes and performance are also improved by adhesive compositions and solid electrolytes disclosed herein. In addition sensors are also disclosed which are novel for use in electrochromic mirrors. The invention also discloses how the electrolytes comprising ionic liquids have no adverse effect on attributes of commercial EC mirrors and often result in improved performance and/or feature enhancements.
    Type: Grant
    Filed: March 4, 2004
    Date of Patent: November 27, 2007
    Assignee: ElectroChromiX, Inc.
    Inventors: Anoop Agrawal, Juan Carlos Lopez Tonazzi, Robert S. LeCompte, John P. Cronin
  • Publication number: 20070235696
    Abstract: Substantially pure ionic liquids and ionic liquid precursors were prepared. The substantially pure ionic liquid precursors were used to prepare substantially pure ionic liquids.
    Type: Application
    Filed: December 22, 2006
    Publication date: October 11, 2007
    Inventors: Anthony Burrell, Benjamin Warner, T. McCleskey, Anoop Agrawal
  • Publication number: 20070184284
    Abstract: An exterior electrochromic reflective mirror element for a vehicular exterior rearview mirror assembly comprises an electrochromic cross-linked polymeric solid film disposed between a first substrate and a second substrate. The electrochromic cross-linked polymeric solid film contacts a transparent conductive layer of the first substrate and a conductive layer comprising a metallic reflective layer of the second substrate. A visual indicator display is disposed to the rear of said second substrate and is part of a blind spot detection and display system and is actuated to emit light responsive to a detection of another overtaking vehicle in a side lane. Light emitted by the visual indicator display passes through the second substrate, through the electrochromic cross-linked polymeric solid film and through the first substrate to be viewed by a driver of the vehicle equipped with the exterior electrochromic reflective mirror element.
    Type: Application
    Filed: January 16, 2007
    Publication date: August 9, 2007
    Applicant: Donnelly Corporation
    Inventors: Desaraju Varaprasad, Mingtag Zhao, Craig Dornan, Anoop Agrawal, Pierr-Marc Allemand, Niall Lynam
  • Publication number: 20070139756
    Abstract: A stable electrochromic stack is provided that is able to persistently hold a desired optical state. The stable electrochromic stack has at least two states. One state may be, for example, a bleached state in which light may readily pass, and the other state may be a colored state that distorts or interferes with the passage of light. Advantageously, the persistent electrochromic stack holds one or both of the optical states without the application of external power. The persistent time period may extend for days, weeks, or years depending on particular constructions, and on application requirements.
    Type: Application
    Filed: July 31, 2006
    Publication date: June 21, 2007
    Inventors: Anoop Agrawal, John Cronin, Juan Tonazzi Lopez, Lori Adams
  • Publication number: 20070140072
    Abstract: An optical media is provided with an associated electro-optic material. The electro-optic material has at least two states. In a first state, the electro-optic material interferes with the ability of an interrogating laser beam to read data from the optical media, and in a second state, the electro-optic material is substantially transparent, enabling the laser beam to read the disc. Advantageously, the electro-optic material may be placed over less than the full data area of the disc. The optical media has an area for placing an integrated circuit, which is used to cause the electro-optic material to transition from a first state to the second state. In one example, an integrated circuit acts as the powering circuit for the electro-optic material, as well as providing logic and processing functions. The integrated circuit also couples to an RF antenna, enabling the integrated circuit to communicate with an associated RF scanning device.
    Type: Application
    Filed: July 28, 2006
    Publication date: June 21, 2007
    Inventors: Anoop Agrawal, John Rilum, John Cronin, Juan Tonazzi Lopez, Paul Atkinson, Rick Marquardt, Steve Parsons
  • Publication number: 20070143774
    Abstract: An optical disc is provided with an associated optical shutter. In a first state, the optical media interferes with the ability of an interrogating laser beam to read data from the optical media, and in a second state, the optical media is substantially transparent, enabling the laser beam to read the disc. A powering circuit is used to cause the optical shutter to transition from a first state to the second state. In one example, an integrated circuit acts as the powering circuit, as well as providing logic and processing functions. The integrated circuit also couples to an RF antenna, enabling the integrated circuit to communicate with an associated RF scanning device. The optical shutter may take various geometric shapes, and typically has an electrochromic material for facilitating state change. The electrochromic material may fill the shutter, or the material may form a pattern.
    Type: Application
    Filed: July 28, 2006
    Publication date: June 21, 2007
    Inventors: Anoop Agrawal, John Rilum, John Cronin, Juan Tonazzi Lopez, Paul Atkinson, Rick Marquardt, Steve Parsons