Patents by Inventor Dentcho Ivanov

Dentcho Ivanov 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: 7618391
    Abstract: Microfluidic shunt valves are disclosed having a deflectable element capable of being held in a closed position to occlude the passage of fluid between an inlet and outlet and, when not held in the closed position, the deflectable element is adapted to oscillate in response to fluid pressure pulses and thereby facilitate fluid passage through the valve. Controls for activating the deflectable element to permit fluid passage are also included.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: November 17, 2009
    Assignees: Children's Medical Center Corporation, New Jersey Institute of Technology
    Inventors: Joseph R. Madsen, Dentcho Ivanov
  • Publication number: 20060241545
    Abstract: Microfluidic shunt valves are disclosed having a deflectable element capable of being held in a closed position to occlude the passage of fluid between an inlet and outlet and, when not held in the closed position, the deflectable element is adapted to oscillate in response to fluid pressure pulses and thereby facilitate fluid passage through the valve. Controls for activating the deflectable element to permit fluid passage are also included.
    Type: Application
    Filed: April 20, 2005
    Publication date: October 26, 2006
    Applicants: CHILDREN'S MEDICAL CENTER CORPORATION, NEW JERSEY INSTITUTE OF TECHNOLOGY
    Inventors: Joseph Madsen, Dentcho Ivanov
  • Patent number: 6817130
    Abstract: Improvements in the sensor array are disclosed for an array used in a module for preventing unauthorized use of a firearm or other device. The module to which the invention is applicable of the type including a plurality of pressure sensors for sensing a user's handgrip on the device; comparator means for comparing a pressure signature profile compiled from an output from said pressure sensors with at least one pressure signature profile in storage; and means for preventing operation of the device when the compared profiles do not match. The improved sensor array comprises a first set of spaced electrically conductive lines formed on the gripping surface; a thin layer of (preferably) piezoresistive material overlying the first set of conductive lines; and a second set of spaced electrically conductive lines formed over the piezoresistive layer.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: November 16, 2004
    Assignee: New Jersey Institute of Technology
    Inventor: Dentcho Ivanov
  • Publication number: 20040031180
    Abstract: Improvements in the sensor array are disclosed for an array used in a module for preventing unauthorized use of a firearm or other device. The module to which the invention is applicable of the type including a plurality of pressure sensors for sensing a user's handgrip on the device; comparator means for comparing a pressure signature profile compiled from an output from said pressure sensors with at least one pressure signature profile in storage; and means for preventing operation of the device when the compared profiles do not match. The improved sensor array comprises a first set of spaced electrically conductive lines formed on the gripping surface; a thin layer of (preferably) piezoresistive material overlying the first set of conductive lines; and a second set of spaced electrically conductive lines formed over the piezoresistive layer. The lines of the second set are orthogonal to the lines of the first set, to establish a grid-like pattern of conductive lines sandwiching the piezoresistive layer.
    Type: Application
    Filed: June 16, 2003
    Publication date: February 19, 2004
    Inventor: Dentcho Ivanov
  • Patent number: 5968326
    Abstract: A composite membrane is disclosed fabricated by depositing an inorganic ion-conducting thin film on a cation-selective organic polymer membrane substrate using Pulse Laser Deposition (PLD) or reactive magnetron sputtering. The fabricated membrane combines the advantages of the polymeric membrane including flexibility and low electrical resistance, with the advantages of the inorganic membrane film including resistance to fouling, high selectivity for alkali metal ions over hydrogen ions and resistance to oxidizing chemicals; electromembrane systems and processes for example alkali metal sensing electrodes and other membrane-based electrochemical detectors, electrolytic and electrodialytic systems incorporate such membranes thus improving their performance in terms of current efficiency, salt to acid conversion ratio, reliable operation and membrane life.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: October 19, 1999
    Assignees: Pulp and Paper Research Institute of Canada, Ecole Polytechnique
    Inventors: Arthur Yelon, Michael Paleologou, Dentcho Ivanov, Ricardo Izquierdo, Michel Meunier