Patents Assigned to Stevens Institute of Technology
  • Patent number: 7497952
    Abstract: A method for removing dissolved contaminants from solution using a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants, in particular, arsenate and arsenite. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated titanium oxide is combined with other filter media to further improve the removal of dissolved contaminants.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: March 3, 2009
    Assignee: The Trustees of Stevens Institute of Technology
    Inventors: Xiaoguang Meng, Mazakhir Dadachov, George P. Korfiatis, Christos Christodoulatos, David J. Moll, Geofrey Paul Onifer, Daniel B. Rice, Robert E. Reim, Fredrick W. Vance, Harlan Robert Goltz, Chan Han, William I. Harris
  • Patent number: 7473369
    Abstract: A method for removing dissolved contaminants from solution using a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants, in particular, arsenate and arsenite. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated titanium oxide is combined with other filter media to further improve the removal of dissolved contaminants.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: January 6, 2009
    Assignee: The Trustees of the Stevens Institute of Technology
    Inventors: Xiaoguang Meng, Mazakhir Dadachov, George P. Korfiatis, Christos Christodoulatos, David J. Moll, Geofrey Paul Onifer, Daniel B. Rice, Robert E. Reim, Fredrick W. Vance, Harlan Robert Goltz, Chan Han, William I. Harris
  • Patent number: 7452163
    Abstract: A process for stabilizing chromium in a chromite ore processing residue (COPR) comprises the steps of adding an acid to consume the excess alkalinity of the COPR, resulting in a pH of less than 10; and adding a chemical reductant to the COPR to convert any hexavalent chromium present to trivalent chromium. A source of sulfate may be added to the COPR to reduce heave potential and improve its geotechnical stability. Treated COPR may be encapsulated in a material suitable to prevent contact between the COPR and water, such as an asphalt.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: November 18, 2008
    Assignee: The Trustees of Stevens Institute of Technology
    Inventors: Mahmoud Wazne, Dimitris Dermatas, Dilhan M. Kalyon, Xiaoguang Meng, Maria Kaouris, John J. Morris
  • Patent number: 7377431
    Abstract: A system and method is provided overcoming decision-making and communications errors to produce expedited and accurate group choices. The invention provides collective outcomes that are resilient to communication and decision making errors, and which are provided with a minimum wait time. The system comprises a user interface engine that provides a channel to the features of the present invention, an agenda manager module for creating and presenting questions, a user manager module that controls interactions with user who request questionnaires, submit response data, and request access to analytical results, and a report manager module that identifies collective outcomes that are resilient to error and/or that weight individual votes to optimize the group's performance in producing one or more correct or optimal collective choices. A common data exchange allows communication between the modules.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: May 27, 2008
    Assignee: The Trustees of Stevens Institute of Technology
    Inventor: Arnold B. Urken
  • Patent number: 7238420
    Abstract: A method for preparing an ?-Al2O3 nanotemplate of fully crystalline ?-Al2O3 directly on the surface of a metal alloy is provided. Also provided is a related apparatus.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: July 3, 2007
    Assignee: Trustees of Stevens Institute of Technology
    Inventors: Woo Y. Lee, Yi-Feng Su, Limin He, Justin Daniel Meyer
  • Patent number: 7192553
    Abstract: A sterilization and decontamination system in which a non-thermal plasma discharge device is disposed upstream of a suspension media (e.g., a filter, electrostatic precipitator, carbon bed). The plasma discharge device generates a plasma that is emitted through apertures (e.g., capillaries or slits) in the primary dielectric. Plasma generated active sterilizing species when exposed to contaminants or undesirable particulate matter is able to deactivate or reduce such matter in contaminated fluid stream and/or on objects. Thus, the undesirable contaminants in the fluid to be treated are first reduced during their exposure to the plasma generated active sterilizing species in the plasma region of the discharge device. Furthermore, the plasma generated active sterilizing species are carried downstream to suspension media and upon contact therewith deactivate the contaminants collected on the suspension media itself. Advantageously, the suspension media may be cleansed in situ.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: March 20, 2007
    Assignees: Plasmasol Corporation, Stevens Institute of Technology
    Inventors: Richard Crowe, George Korfiatis, Sergei Babko-Malyi
  • Patent number: 7172118
    Abstract: A system and method is provided overcoming decision-making and communications errors to produce expedited and accurate group choices. The invention provides collective outcomes that are resilient to communication and decision making errors, and which are provided with a minimum wait time. The system comprises a user interface engine that provides a channel to the features of the present invention, an agenda manager module for creating and presenting questions, a user manager module that controls interactions with user who request questionnaires, submit response data, and request access to analytical results, and a report manager module that identifies collective outcomes that are resilient to error and/or that weight individual votes to optimize the group's performance in producing one or more correct or optimal collective choices. A common data exchange allows communication between the modules.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: February 6, 2007
    Assignee: The Trustees of Stevens Institute of Technology
    Inventor: Arnold B. Urken
  • Patent number: 7170085
    Abstract: The present invention provides a device for frequency-selective detection of electromagnetic radiation in the terahertz region of the electromagnetic spectrum using a lateral semiconductor superlattice, a metal antenna attached to the lateral semiconductor superlattice; and a resonator comprising two mirrors and a substrate. A method for detecting electromagnetic radiation using the device is also provided.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: January 30, 2007
    Assignee: Stevens Institute of Technology
    Inventors: Alexander S. Raspopin, Hong-Liang Cui
  • Patent number: 7073384
    Abstract: A method and apparatus (10) is provided which employs phase or amplitude modulated electromagnetic probing waves (20) (in optical or microwave frequency ranges or both) emitted toward a vibrating object (8). The optical and/or microwave probing signals (20) remotely irradiate an object (8) of interest. The object (8) reflects and/or scatters the probing wave (20) toward a receiver (22). The reflected/scattered modulated signal (24) is received with a remote sensor (receiver) (22). Vibration causes additional phase modulation to the probing wave (20). At the receiving end, the signal is demodulated to extract and analyze the vibration waveform (26,28). The present invention can be utilized for nondestructive testing, monitoring of technological processes, structural integrity, noise and vibration control, mine detection, etc.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: July 11, 2006
    Assignee: Stevens Institute of Technology
    Inventors: Dimitri Donskoy, Nikolay Sedunov, Edward A. Whittaker
  • Patent number: 7040033
    Abstract: The present invention relates to apparatuses and methods for calibrating relative motions of moveable parts using plurality of balls, rods, and liner encoders which form configurations to measure multiple translational, angular and squareness errors simultaneously.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: May 9, 2006
    Assignee: Trustees of Stevens Institute of Technology
    Inventors: Zhenqi Zhu, Hongliang Cui
  • Patent number: 6942807
    Abstract: A water filtration device (3) and method which removes heavy metals and organic compounds from raw water is provided.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: September 13, 2005
    Assignee: Trustees of Stevens Institute of Technology
    Inventors: Xiaoguang Meng, George P. Korfiatis
  • Patent number: 6919029
    Abstract: A method for producing a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants includes the steps of preparing a titanium oxide precipitate from a mixture comprising a hydrolysable titanium compound and heating the precipitate at a temperature of less than 300° C., without calcining the precipitate. Preferably, the titanium oxide product includes crystalline anatase having primary crystallite diameters in the range of 1-30 nm. The surface-activated crystalline titanium oxide product is used in methods to remove dissolved inorganic contaminants from dilute aqueous streams by suspending the product in an aqueous stream or by filtering an aqueous stream through a bed of the product. In another method, a hydrolysable titanium compound is added to an aqueous stream so that titanium oxides form as a co-precipitate with dissolved contaminants within a bed of particulate material.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: July 19, 2005
    Assignee: Trustees of Stevens Institute of Technology
    Inventors: Xiaoguang Meng, Mazakhir Dadachov, George P. Korfiatis, Christos Christodoulatos
  • Patent number: 6900592
    Abstract: A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate having an upper surface and a lower surface and a plurality of holes extending therethrough. The perforated dielectric plate is positioned over the cathode. Each of the holes acts as a separate active current limiting micro-channel that prevents the overall current density from increasing above the threshold for the glow-to-arc transition. This allows for a stable glow discharge to be maintained for a wide range of operating pressures (up to atmospheric pressures) and in a wide range of electric fields include DC and RF fields of varying strength.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: May 31, 2005
    Assignee: The Trustees of the Stevens Institute of Technology
    Inventors: Erich Kunhardt, Kurt Becker
  • Patent number: 6879103
    Abstract: A glow plasma discharge device having an electrode (20, 40) covered with perforated dielectric (30) is disclose.
    Type: Grant
    Filed: March 17, 1998
    Date of Patent: April 12, 2005
    Assignee: The Trustees of the Stevens Institute of Technology
    Inventors: Erich E. Kunhardt, Kurt H. Becker
  • Patent number: 6818193
    Abstract: A plasma reactor including a first dielectric having at least one capillary defined therethrough, and a segmented electrode including a plurality of electrode segments, each electrode segment is disposed proximate an associated capillary. Each electrode segment may be formed in different shapes, for example, a pin, stud, washer, ring, or disk. The electrode segment may be hollow, solid, or made from a porous material. The reactor may include a second electrode and dielectric with the first and second dielectrics separated by a predetermined distance to form a channel therebetween into which the plasma exiting from the capillaries in the first dielectric is discharged. The fluid to be treated is passed through the channel and exposed to the plasma discharge. If the electrode segment is hollow or made of a porous material, then the fluid to be treated may be fed into the capillaries in the first dielectric and exposed therein to the maximum plasma density.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: November 16, 2004
    Assignees: Plasmasol Corporation, Stevens Institute of Technology, LLC
    Inventors: Christos Christodoulatos, George Korfiatis, Richard Crowe, Erich E Kunhardt
  • Patent number: 6808760
    Abstract: A method for preparing an &agr;-Al2O3 nanotemplate of fully crystalline &agr;-Al2O3 directly on the surface of a metal alloy is provided. Also provided is a related apparatus.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: October 26, 2004
    Assignee: Trustees of Stevens Institute of Technology
    Inventors: Woo Y. Lee, Yi-Feng Su, Limin He, Justin Daniel Meyer
  • Patent number: 6801131
    Abstract: A device and method for detecting the presence of insects in a structure utilize a plurality of transceivers, each of which generates separate and distinct microwave signals and receives separate and distinct signals reflected from a structure being tested. The reflected signals received by each of the transceivers are processed, for instance by a microprocessor, so as to provide output signals that indicate the presence or absence of insects in the structure. If most or all of the transceivers receive positive signals indicative of the possible presence of insects in the structure, which is a false indication of the presence of insects, the microprocessor distinguishes this false indication from an actual indication of the presence of insects, thereby enabling the detection of insects despite the existence of motion signals caused by non-insect motion.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: October 5, 2004
    Assignee: Trustees of Stevens Institute of Technology
    Inventors: Dimitri Donskoy, Nikolay Sedunov
  • Publication number: 20040137039
    Abstract: Low molecular weight molecules are selectively released from a layered polymer film having a net excess charge by introducing at least one other type of molecule that binds reversibly to the film and thereby reduces the net excess charge. Oligomeric and polymeric molecules, whether synthetic or natural, are selectively and reversibly released from the layered polymer film in response to variation in ionic strength in the environment of the film. Such molecules are also selectively and reversibly released from the layered polymer film in response to changes in the pH in the environment of the film.
    Type: Application
    Filed: July 22, 2003
    Publication date: July 15, 2004
    Applicant: Trustees of Stevens Institute of Technology
    Inventors: Svetlana A. Sukhishvili, Eugenia Kharlampieva, Vladimir A. Izumrudov
  • Patent number: 6752926
    Abstract: A closed bioreactor for high organic carbon removal and ammonia conversion in high-strength wastes under microgravity conditions. Oxygen is provided to the bioreactor by diffusion through a non-porous hydrophobic membrane in a recirculation line, allowing a high rate of oxygen transfer while minimizing the opportunity for formation of bubbles. Operating the bioreactor as a closed unit at elevated pressures keeps the oxygen in the dissolved phase. The oxygen transfer within the reactor is thus much more efficient and uniform than in similar reactors having both a liquid and gaseous phase.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: June 22, 2004
    Assignee: Trustees of Stevens Institute of Technology
    Inventors: Christos Christodoulatos, George P. Korfiatis
  • Patent number: 6751287
    Abstract: The apparatus comprises an X-ray source (112), a monochromator (118), a goniometer (170), a position sensitive detector (150), a mechanism to rock or rotate the sample or the X-ray source and computer means (160) for interpreting the data obtained at the position sensitive detector. The method of the present invention includes the steps of generating an X-ray; narrowing the wavelength of the X-ray beam; allowing the particles to diffract the beam; detecting the diffracted beam with a position sensitive detector, collecting the diffraction data from individual particles; rocking or rotating the specimen or the X-ray source for successive times to cover the angular range of reflection of the particles; compilation of the diffraction data in the computer memory to construct the intensity profile for the individual particles; and interpreting the data to determine particle size and particle size distribution.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: June 15, 2004
    Assignee: The Trustees of the Stevens Institute of Technology
    Inventors: Dilhan M. Kalyon, Rahmi Yazici