Patents by Inventor Ark L. Lew

Ark L. Lew 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: 6967103
    Abstract: An explosive detector that utilizes an array of molecularly imprinted polymer (MIP) coated, bifurcated fiber optic cables to form an image of a target molecule source. Individual sensor fiber assemblies, each with a calibrated airflow, are used to expose the fibers to the target molecule. The detector energizes a dedicated excitation light source for each fiber, while simultaneously reading and processing the intensity of the resulting fluorescence that is indicative of the concentration of the target molecule. Processing electronics precisely controls the excitation current, and measures the detected signal from each narrow band pass filter and photodiode. A computer with display processes the data to form an image of the target molecule source that can be used to identify the source even when low level contamination of the same molecule is present. The detector can be used to detect multiple and/or non-explosive targets by varying the MIP coating.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: November 22, 2005
    Assignee: The Johns Hopkins University
    Inventors: Paul D. Schwartz, George M. Murray, O. Manuel Uy, Binh Q. Le, David D. Scott, Ark L. Lew, Sharon X. Ling, Joseph J. Suter
  • Patent number: 6881593
    Abstract: A semiconductor die adapter assembly includes a semiconductor die cut from a wafer, the die having an active surface including bond pads. A die adapter, also having bond pads, is bonded to the semiconductor die. Die-to-adapter connectors electrically connect the die bond pads to the adapter bond pads. Finally, adapter-to-substrate connectors electrically connect the adapter bond pads to a device substrate. Having bond pads on the die adapter eliminates the need to break and remake the electrical connections to the original bond pads on the die during burn-in testing of the die.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: April 19, 2005
    Assignee: The Johns Hopkins University
    Inventors: Binh Q. Le, Ark L. Lew, Harry K. Charles, Jr., Paul D. Schwartz, Seppo J. Lehtonen, Sharon X. Ling
  • Patent number: 6847913
    Abstract: An ambulatory skin temperature monitoring system. A flexible band is attachable to a patient. The flexible band also secures an electronics assembly that comprises the various electrical components that monitor and operate the ambulatory skin temperature monitoring system. At least one skin temperature sensor is positioned so that it is in contact with the patients skin when the system is attached to the patient. There is also an ambient temperature sensor positioned on the top surface of the electronics assembly housing for measuring and contrasting the ambient temperature to the skin temperature. The electronics assembly positioned within generally comprises a power source and a micro-controller. The micro-controller is coupled with the skin temperature sensor and the ambient temperature sensor. The micro-controller also includes a memory unit for storing temperature data obtained from the skin temperature sensor and the ambient temperature sensor.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: January 25, 2005
    Assignee: The Johns Hopkins University
    Inventors: Fredrick M. Wigley, Robert A. Wise, Paul D. Schwartz, Ark L. Lew, David D. Scott, Binh Q. Le
  • Publication number: 20040210472
    Abstract: A real-time feedback survey system and method allowing for responses to survey questions to be input by users and received by the surveyor in real-time is provided. This result is achieved by using a media player to provide a request for feedback information to a remote responding device, the remote responding device allowing response input and incorporating a transmitter for transmitting the response to a central facility.
    Type: Application
    Filed: July 24, 2003
    Publication date: October 21, 2004
    Inventors: Ark L. Lew, Martin E. Fraeman, Binh Q. Le
  • Patent number: 6608464
    Abstract: A self-contained, small, lightweight, portable, renewable, modular integrated power source. The power source consists of a recharging means such as solar cells that are laminated onto a rechargeable energy source such as a solid state polymer battery which in turn is laminated onto a substrate containing circuits which manage the polymer battery charging. Charging of the battery can occur via solar energy or, alternatively, via RF coupling using external RF charging equipment or a hand held generator. For added support, the integrated power source is then bonded to an applications housing or structure. This integrated power source can independently power the electronic application. It can also serve as casing or housing by taking the shape of the application enclosure.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: August 19, 2003
    Assignee: The Johns Hopkins University
    Inventors: Ark L. Lew, Joseph J. Suter, Binh Q. Le
  • Publication number: 20030143119
    Abstract: An explosive detector that utilizes an array of molecularly imprinted polymer (MIP) coated, bifurcated fiber optic cables to form an image of a target molecule source. Individual sensor fiber assemblies, each with a calibrated airflow, are used to expose the fibers to the target molecule. The detector energizes a dedicated excitation light source for each fiber, while simultaneously reading and processing the intensity of the resulting fluorescence that is indicative of the concentration of the target molecule. Processing electronics precisely controls the excitation current, and measures the detected signal from each narrow band pass filter and photodiode. A computer with display processes the data to form an image of the target molecule source that can be used to identify the source even when low level contamination of the same molecule is present. The detector can be used to detect multiple and/or non-explosive targets by varying the MIP coating.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 31, 2003
    Inventors: Paul D. Schwartz, George M. Murray, O. Manuel Uy, Binh Q. Le, David D. Stott, Ark L. Lew, Sharon X. Ling, Joseph J. Suter
  • Publication number: 20030069714
    Abstract: An ambulatory skin temperature monitoring system. A flexible band is attachable to a patient. The flexible band also secures an electronics assembly that comprises the various electrical components that monitor and operate the ambulatory skin temperature monitoring system. At least one skin temperature sensor is positioned so that it is in contact with the patients skin when the system is attached to the patient. There is also an ambient temperature sensor positioned on the top surface of the electronics assembly housing for measuring and contrasting the ambient temperature to the skin temperature. The electronics assembly positioned within generally comprises a power source and a micro-controller. The micro-controller is coupled with the skin temperature sensor and the ambient temperature sensor. The micro-controller also includes a memory unit for storing temperature data obtained from the skin temperature sensor and the ambient temperature sensor.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 10, 2003
    Inventors: Fredrick M. Wigley, Robert A. Wise, Paul D. Schwartz, Ark L. Lew, David D. Stott, Binh Q. Le
  • Publication number: 20030011060
    Abstract: A semiconductor die adapter assembly includes a semiconductor die cut from a wafer, the die having an active surface including bond pads. A die adapter, also having bond pads, is bonded to the semiconductor die. Die-to-adapter connectors electrically connect the die bond pads to the adapter bond pads. Finally, adapter-to-substrate connectors electrically connect the adapter bond pads to a device substrate. Having bond pads on the die adapter eliminates the need to break and remake the electrical connections to the original bond pads on the die during burn-in testing of the die.
    Type: Application
    Filed: May 31, 2002
    Publication date: January 16, 2003
    Inventors: Binh Q. Le, Ark L. Lew, Harry K. Charles,, Paul D. Schwartz, Seppo J. Lehtonen, Sharon X. Ling
  • Patent number: 6476581
    Abstract: Apparel and sensor coverings comprising a material suitable for use therein and a laminate integrated therein, the laminate comprising a plurality of layers comprising an energy conversion means for delivering electrical energy, electrical energy storing means, and charge management and control circuitry. The invention is used to power electronic applications either integrated with the charge management and control circuitry or incorporated into the laminate as a separate layer to create “smart” apparel and sensors. External electronic devices and various types of sensors can be connected and powered using one or more outlets integrated into the material. Antenna(s) and infrared port(s) also integrated into the material permit communications with other wearers of the smart apparel, with and between smart sensors, with local command and control centers on the ground or in the air and with distant headquarters via satellite(s).
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: November 5, 2002
    Assignee: The Johns Hopkins University
    Inventor: Ark L. Lew
  • Publication number: 20020089304
    Abstract: Apparel and sensor coverings comprising a material suitable for use therein and a laminate integrated therein, the laminate comprising a plurality of layers comprising an energy conversion means for delivering electrical energy, electrical energy storing means, and charge management and control circuitry. The invention is used to power electronic applications either integrated with the charge management and control circuitry or incorporated into the laminate as a separate layer to create “smart” apparel and sensors.
    Type: Application
    Filed: March 14, 2002
    Publication date: July 11, 2002
    Inventor: Ark L. Lew
  • Patent number: 6388422
    Abstract: Apparel and sensor coverings comprising a material suitable for use therein and a laminate integrated therein, the laminate comprising a plurality of layers comprising an energy conversion means for delivering electrical energy, electrical energy storing means, and charge management and control circuitry. The invention is used to power electronic applications either integrated with the charge management and control circuitry or incorporated into the laminate as a separate layer to create “smart” apparel and sensors. External electronic devices and various types of sensors can be connected and powered using one or more outlets integrated into the material. Antenna(s) and infrared port(s) also integrated into the material permit communications with other wearers of the smart apparel, with and between smart sensors, with local command and control centers on the ground or in the air and with distant headquarters via satellite(s).
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: May 14, 2002
    Assignee: The Johns Hopkins University
    Inventor: Ark L. Lew
  • Patent number: 6255799
    Abstract: The invention comprises a means for generating energy while walking or running for storage in a rechargeable battery. One embodiment uses lever arm movement in the heel of a shoe resulting from normal walking or running to generate energy from a built-in generator. The linear or rotational motion of the lever arm engages the circular gear assembly and turns the generator/motor/turbine, thus generating power. The second embodiment uses fluid reservoirs embedded in the shoes. Pressure changes resulting from normal walking or running moves the fluid through a narrow channel connecting two reservoirs, thus generating power by rotating a flywheel and an attached motor/generator/turbine in the middle of the channel. Secondary (rechargeable) batteries are incorporated into the invention either in an integrated form or as an add-on design.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: July 3, 2001
    Assignee: The Johns Hopkins University
    Inventors: Binh Q. Le, Ark L. Lew, Paul D. Schwartz, Albert C. Sadilek, Joseph J. Suter, Jason E. Jenkins, Sharon X. Ling
  • Patent number: 6157167
    Abstract: A microprocessor-based charge control architecture which provides individual battery cell charge control in order to insure an equality of charge among all cells in a rechargeable battery cell array during a single charge cycle. The array is arranged in parallel strings with an identical number of cells in series in each string. The microprocessor controls the amount of charge current in each battery cell via a shunt element for each battery cell, and adjusts the shunt element to bypass a portion of the string current for each battery cell. The invention also permits charge control algorithms to be conveniently updated, provides individual cell coulometry, and autonomously monitors and corrects conditions which can result in battery failure. Any type of rechargeable battery cell and array size can be accommodated. The array size can be set to accommodate the specific voltage and load current requirements of each application.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: December 5, 2000
    Assignee: The Johns Hopkins University
    Inventors: Paul D. Schwartz, Binh Q. Le, Ark L. Lew, Joseph J. Suter
  • Patent number: 5644207
    Abstract: A self-contained, small, lightweight, portable, renewable, modular integrated power source. The power source consists of solar cells that are laminated onto a solid state polymer battery which in turn is laminated onto a substrate containing circuits which manage the polymer battery charging. Charging of the battery can occur via solar energy or, alternatively, via RF coupling using external RF charging equipment or a hand held generator. For added support, the integrated power source is then bonded to an applications housing or structure. This integrated power source can independently power the electronic application. It can also serve as casing or housing by taking the shape of the application enclosure.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: July 1, 1997
    Assignee: The Johns Hopkins University
    Inventors: Ark L. Lew, Joseph J. Suter, Binh Q. Le