Patents by Inventor Sadeg M. Faris

Sadeg M. Faris 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: 6801270
    Abstract: A backlight for a liquid crystal display (LCD) employing light recycling. In one embodiment the backlight includes a light guide fabricated from a substantially non-absorptive material and a reflective layer fabricated from a highly reflective material. In another embodiment the backlight includes a light source, a bundle of optical fibers, and a reflective layer fabricated from a highly reflective material, wherein the bundle of optical fibers is configured to receive light from the light source and distribute it to the reflective layer.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: October 5, 2004
    Assignee: Reveo, Inc.
    Inventors: Sadeg M. Faris, Aharon Hochbaum, Wnehua Niu, Jiang Yingqiu
  • Patent number: 6800393
    Abstract: Electrochemical cell systems are disclosed herein that are capable of selective ionic isolation, oxidant isolation, oxidant removal, moisture control, and combinations thereof. Selective ionic isolation is generally effectuated by selectively eliminating or minimizing ionic communication between an anode and a cathode of the electrochemical cell.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: October 5, 2004
    Assignee: Reveo, Inc.
    Inventor: Sadeg M. Faris
  • Patent number: 6798639
    Abstract: Flow through capacitors are described herein having improved capabilities. In general, asymmetric flow through capacitors are formed, increasing overall capacitance. The asymmetry may be accomplished by utilizing electrodes of different materials, different dimensions, or the same materials with different capacitance properties.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: September 28, 2004
    Assignee: InventOjaya Sdn. Bhd.
    Inventors: Sadeg M. Faris, Xuerong Gao
  • Patent number: 6794069
    Abstract: Fuel cells (e.g., air-depolarized fuel cells) are stacked, supported and electrically interconnected into a battery structure with a connector block. The anode and cathode elements of each fuel cell are provided with conductive terminating elements (e.g., plug connectors), preferably extending in downward “U” shaped configuration from the upper ends of the anode and cathode elements respectively. The connector block comprises a series of conductive apertures, positioned and sized, to accommodate the conductive terminating elements of the anodes and cathodes therein. When the conductive terminating elements of the anodes and cathodes are slidably engaged with the conductive apertures of the connector block, the connector block mechanical support the anodes and cathode so engaged.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: September 21, 2004
    Assignee: Reveo, Inc.
    Inventors: Sadeg M. Faris, Tsepin Tsai, Wenbin Yao, Lin-Feng Li, George Tzong-Chyi Tzeng, Michael Rabin, William Morris
  • Patent number: 6790414
    Abstract: An oxygen enrichment system is provided. The system includes an electrochemical cell for generating oxygen from ambient air. The electrochemical cell extracts oxygen from ambient air based on hydroxide conduction. A mixer is provided in fluid communication with ambient air, and an outlet provides oxygen enriched air to a user or air-breathing apparatus. In further embodiments, a purification system is also included. The air enrichment system may be employed with suitable batteries to provide a portable air enrichment device.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: September 14, 2004
    Assignee: InventQjaya Sdn. Bhd.
    Inventors: Tsepin Tsai, Sadeg M. Faris
  • Patent number: 6786610
    Abstract: An apparatus is provided for automatically reducing glare produced from a spatial scene by reducing the intensity of light rays propagating from points in the three-dimensional spatial scene towards an optical element having a field of view. Further, an apparatus is provided that automatically reduces interfering illumination produced from an illumination source by reducing the intensity of light rays propagating from the illumination source towards a sensor having a field of view of radio communication. Both apparatus include an electro-optical element having an optically transparent surface including a plurality of pixels through which the field of view of the optical element or the sensor passes. Each pixel has a controllable light transmittance for selectively reducing the intensity of incident light rays propagating from one or more points from the illumination source, through the pixel, then towards the sensor or optical element.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: September 7, 2004
    Assignee: InventQjaya Sdn. Bhd.
    Inventor: Sadeg M. Faris
  • Publication number: 20040160538
    Abstract: Electro-optical glazing structures having total-scattering and total-transparent modes of operation which are electrically-switchable for use in dynamically controlling electromagnetic radiation flow in diverse applications.
    Type: Application
    Filed: December 24, 2003
    Publication date: August 19, 2004
    Inventors: Le Li, Jian-Feng Li, Sadeg M. Faris
  • Patent number: 6778236
    Abstract: A reflective strain gauge includes an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection or transmission grating capable of reflecting or transmitting light of a selected wavelength, and means for adhering the film to a surface of a workpiece for monitoring the strain at said surface. A change in the nature of the reflected light is an indication of strain. Also included is a polarizing material having an holographically-formed polymer dispersed liquid crystal (H-PDLC) film comprising layers of liquid crystal (LC) droplets in a matrix polymer, the H-PDLC film having a reflection grating capable of reflecting light of a selected wavelength, wherein the reflection grating of the H-PDLC film is oriented, such that the refractive index parallel to said axis of orientation (ne) is greater than the refractive index perpendicular to said axis (no).
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: August 17, 2004
    Assignees: Reveo, Inc., Brown University Research Foundation
    Inventors: Gregory P. Crawford, Darran R. Cairns, Christopher C. Bowley, Sorasak Danworaphong, Adam K. Fontecchio, Sadeg M. Faris, Le Li
  • Patent number: 6774961
    Abstract: Disclosed are super broadband circularly polarizing film materials and novels methods of fabricating and using the same. The circularly polarizing materials are made from a film of material, such as a CLC polymer having a cholesteric order, in which a liquid crystal material, such as a nematic liquid crystal material, is distributed in a non-linear fashion across the thickness of the film in a plurality of liquid crystal-rich and liquid crystal-depleted sites in the CLC polymer. The pitch of the helices of the CLC molecules in the polyermized CLC material varies in a non-linear (e.g. exponential) manner along the depth dimension (i.e. transverse to the surface) thereof. The resulting circularly polarizing materials have reflection and transmission characteristics over bands of operation approaching 2000 nm. Depending on the final spiral structure of the materials utilized, the CLC circularly polarizing materials reflect either left-handed or right-handed circularly polarized light.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: August 10, 2004
    Assignee: Reveo, Inc.
    Inventors: Sadeg M. Faris, Le Li, Yingqiu Jiang
  • Publication number: 20040150772
    Abstract: A reflector for reflecting a broad bandwidth of electromagnetic (EM) radiation, comprising a sheet comprising a large plurality of pairs of layers of transparent polymer material parallel to a surface of the sheet, each pair of layers having a difference in the index of refraction between the materials in each layer of the pair, the total thickness of each pair of layers in the large plurality of layers varying substantially continuously and non linearly across the thickness of the sheet, is disclosed.
    Type: Application
    Filed: October 31, 2003
    Publication date: August 5, 2004
    Inventors: Sadeg M. Faris, Le Li
  • Publication number: 20040146764
    Abstract: A novel battery construction including a plurality of discharging cells formed by a cathode structure having plurality of relatively small cathode elements on a cathode support structure, and an anode structure having one or more anode-contacting elements on an anode-contacting element support plate. Each discharging cell can be independently activated (i.e. enabled) using a transistor-based power switching element operated under the control of a switching controller. The novel battery construction may also include a plurality of recharging cells, spatially arranged with the plurality of discharging cells.
    Type: Application
    Filed: May 8, 2003
    Publication date: July 29, 2004
    Applicant: Reveo, Inc.
    Inventors: Tsepin Tsai, Sadeg M. Faris
  • Publication number: 20040141120
    Abstract: Variable optical attenuators (VOAs) are provided, based on electrically switchable CLC reflective polarizers. The reflectivity of the described reflective VOAs can theoretically be electrically adjusted between 0% to 100%, and the reflective bandwidth can be easily adjusted. In general, the VOA includes a pair of switchable CLC polarizers and a driver for driving the polarizers. When the electric fields on both polarizers are off, the polarizers serve as two reflective mirrors. When the fields are turned on, the two polarizers are switched into two transparent sheets allowing light to transmit therethrough. Continuously changing the voltages on the two polarizers electrically adjusts the attenuation.
    Type: Application
    Filed: August 26, 2003
    Publication date: July 22, 2004
    Inventors: Sadeg M. Faris, Zhan He
  • Publication number: 20040130851
    Abstract: A staged or serial deionization system is described. The system includes N deionization subsystems. The system has a charging state for deionizing fluid and a discharging state for deionizing the respective deionization subsystem. In the charging state, ionized fluid is discharged serially. In the discharging state, N deionization subsystems are discharged in parallel, thereby reducing the ecological impact of the discharge brine.
    Type: Application
    Filed: October 27, 2003
    Publication date: July 8, 2004
    Inventor: Sadeg M. Faris
  • Patent number: 6753044
    Abstract: Disclosed are novel reflective microflakes for use in making “additive-primary” coloring media having improved reflection characteristics over the red, green and blue super-bright color characteristics, and “super-white” coloring media having Magnesium-Oxide like color characteristics. The coloring media of the present invention provides a palette of colors for imparting color characteristics or forming color images upon surfaces of arbitrary surface geometry. In the preferred embodiments of the invention, the microflakes are made from cholesteric liquid crystal (CLC) material, wherein the pitch of the helices of the liquid crystal molecules in each CLC microflake varies along the thickness dimension (i.e. transverse to the surface) thereof. Depending on the final spiral structure of the materials utilized, the CLC circularly polarizing materials reflect either left-handed or right-handed circularly polarized light.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: June 22, 2004
    Assignee: Reveo, Inc.
    Inventors: Sadeg M. Faris, Le Li
  • Publication number: 20040114473
    Abstract: Disclosed is a novel optical information storage media having M information storage decks. Each information storage deck has N information storage layers, and each information storage layer has a pair of information storage structures. Each paired information storage structure has a characteristic wavelength and polarization state, and from which recorded information can be read by a laser beam having similar wavelength and polarization-state characteristics. A novel system is provided for reading the optical information storage media of the present invention. In the illustrative embodiment, an optical storage device of the present invention having MxNx2 information storage layers can be read using only N laser lines (i.e. spectral components), thereby providing a 2Mfold increase in information storage capacity over prior art systems. The information storage and retrieval system of the present invention is completely backward compatible to allow for the reading of conventional CD-ROM devices.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 17, 2004
    Applicant: Reveo, Inc.
    Inventors: Bunsen Fan, Sadeg M. Faris
  • Publication number: 20040095706
    Abstract: Flow through capacitors are described herein having improved capabilities. In general, asymmetric flow through capacitors are formed, increasing overall capacitance. The asymmetry may be accomplished by utilizing electrodes of different materials, different dimensions, or the same materials with different capacitance properties.
    Type: Application
    Filed: August 26, 2003
    Publication date: May 20, 2004
    Inventors: Sadeg M. Faris, Xuerong Gao
  • Publication number: 20040095531
    Abstract: A color liquid crystal display using reflective color filters using layers of cholesteric liquid crystals is disclosed. The reflective color filters have two different center wavelengths and bandwidths per layer and are stacked in two layers to provide colored light for displays. With various numbers of layers in the stack, different polarization levels are provided. The pixels in the display of the invention are arranged such that multiple adjacent sub-pixels in a layer with the same color makes the color filters easier to manufacture.
    Type: Application
    Filed: May 30, 2003
    Publication date: May 20, 2004
    Inventors: Yingqiu Jiang, Le Li, Aharon Hochbaum, Sameer Vartak, Hristina Galabova, Richard Wiley, Sadeg M. Faris
  • Publication number: 20040095523
    Abstract: A light controlling film is disclosed, comprising a polymerized polymer network varying spatially in a direction normal to the film surface, where the polymerized polymer network is a crosslinked high molecular weight polymeric material mixed with a low molecular weight nematic material exhibiting cholesteric liquid crystal (CLC) order, wherein an electric field impressed in the film controls the reflection bandwidth of circularly polarized light.
    Type: Application
    Filed: September 5, 2003
    Publication date: May 20, 2004
    Inventors: Le Li, Bunsen Fan, Yingqiu Jiang, Sadeg M. Faris, Jian-Feng Li, Sameer Vartak
  • Publication number: 20040080705
    Abstract: Variable optical delay (VOD) systems are provided that include optical switching techniques, and optical manifold techniques, and/or index switching techniques. In certain embodiments, liquid crystal cells are used to impart fine delay in a VOD system. Medium delay may be provided with index switching systems. Course delay may be provided with total-internal-reflection or polarization based optical manifold systems, or micro-fluidic based optical manifold systems. These fine, medium and course delays may be integrated in a single VOD system to provide a wide range and high resolution delay.
    Type: Application
    Filed: June 27, 2003
    Publication date: April 29, 2004
    Inventors: Seungug Koh, Sadeg M. Faris
  • Publication number: 20040066155
    Abstract: Disclosed are improved beam steering and scanning devices which utilize cholesteric liquid crystal (CLC) elements arranged in branches to form a logic tree structure. Each branch thereof comprises an active and passive CLC element; the former further comprising a half-wave retarder and an electrode and the latter only the CLC element. Each succeeding branch contains twice as many branches as a preceding branch and, by activating active CLC element electrodes under control of a programmable pulsed source, inputs applied to the first stage of a logic tree are delivered as a scanned line of electromagnetic energy or light to the imaging cells of the last stage of the logic tree. By stacking identical logic tree structures with a laser source for each tree, a flat panel imaging array or display panel is formed in which the transmission intensity losses are minimized.
    Type: Application
    Filed: May 8, 2003
    Publication date: April 8, 2004
    Inventor: Sadeg M. Faris