Patents by Inventor Viorel-Georgel Dumitru

Viorel-Georgel Dumitru 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).

  • Publication number: 20190378878
    Abstract: A synapse crossbar array device is provided. The synapse crossbar array device includes a plurality of Indium-Gallium-Zinc-Oxide (IGZO) thin film transistors (TFTs) and a plurality of IGZO resistive synapses. Each IGZO resistive synapse includes a IGZO resistive layer, a first electrical contact electrically coupled to one of the plurality of IGZO TFTs and a second electrical contact electrically connected to one of a plurality of column connection lines. The first electrical contact and the second electrical contact of each IGZO resistive synapse are disposed on the IGZO resistive layer of the resistive synapse. The synapse crossbar array device includes IGZO resistive synapses that have, each of them, an established resistance value. The synapse crossbar array may be fully transparent and may be integrated into the displays with which portable devices are provided.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 12, 2019
    Applicant: CYBERSWARM, INC.
    Inventors: Viorel-Georgel DUMITRU, Cristina BESLEAGA STAN, Alin VELEA, Aurelian-Catalin GALCA
  • Publication number: 20190378570
    Abstract: A programmable resistive memory element and a method of adjusting a resistance of a programmable resistive memory element are provided. The programmable resistive memory element includes at least one resistive memory element. Each resistive memory element includes an Indium-Gallium-Zinc-Oxide (IGZO) resistive layer, a first electrical contact and a second electrical contact. The first and second electrical contacts are disposed on the IGZO resistive layer in the same plane. The programmable resistive memory element includes a voltage generator coupled to the first and second electrical contacts, constructed and arranged to apply a thermal treatment to the resistive memory element to adjust a resistance of the resistive memory element.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 12, 2019
    Applicant: CYBERSWARM, INC.
    Inventors: Viorel-Georgel DUMITRU, Cristina BESLEAGA STAN, Alin VELEA, Aurelian-Catalin Galca
  • Patent number: 10324053
    Abstract: An illustrative humidity sensor may include a substrate and a sensing field effect transistor. The sensing field effect transistor may comprise a source formed on the substrate, a drain formed on the substrate, a gate, and a piezoelectric layer disposed over the gate. Another illustrative humidity sensor may comprise a substrate, a semi-conductor layer disposed over the substrate, a piezoelectric layer disposed over the semi-conductor layer, a first electrode disposed on the piezoelectric layer, and a second electrode disposed on the piezoelectric layer. In some instances, the piezoelectric layer may comprise aluminum nitride.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: June 18, 2019
    Assignee: Honeywell International Inc.
    Inventors: Viorel Georgel Dumitru, Viorel Avramescu, Octavian Buiu, Mihai Brezeanu, Bogdan Serban
  • Publication number: 20190154630
    Abstract: A gas sensor includes a field effect transistor supported on an oxide layer of a substrate, the field effect transistor having a doped source (p+ doped for T-FET and n+ doped for FET) and an n+ doped drain separated by an channel region (intrinsic for T-FET or slightly p-doped for FET), and a floating gate separated from the channel region by a gate oxide, a passivation layer covering the floating gate, and a sensing layer supported by the passivation layer, the sensing layer comprising nanofibers.
    Type: Application
    Filed: December 28, 2018
    Publication date: May 23, 2019
    Inventors: Cornel P. Cobianu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu, Alisa Stratulat, Mihai Brezeanu
  • Patent number: 10246573
    Abstract: Various embodiments disclosed relate to anti-static compositions and gloves made from the same. In various embodiments, the present invention provides a doped polyaniline comprising a dopant that is a polyacrylic acid; a polymethacrylic acid; a sulfonatocalixarene; a cyclodextrin sulfate; a compound having the structure: wherein R2 is chosen from substituted or unsubstituted (C1-C10)hydrocarbyl- and substituted or unsubstituted (C1-C10)hydrocarbyl-O—, L1 is substituted or unsubstituted (C1-C10)hydrocarbylene, L2 is chosen from a bond, —O—, —O—C(O)—, and —NH—C(O)—, and n is about 1 to about 100,000; a salt thereof; or a combination thereof.
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: April 2, 2019
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Bogdan-Catalin Serban, Cornel P. Cobianu, Octavian Buiu, Mihai Brezeanu, Alisa Stratulat, Viorel Georgel Dumitru, Andrea Piesker, Christiane Saunier, Eric Farin
  • Patent number: 10197526
    Abstract: A gas sensor includes a field effect transistor supported on an oxide layer of a substrate, the field effect transistor having a doped source (p+ doped for T-FET and n+ doped for FET) and an n+ doped drain separated by an channel region (intrinsic for T-FET or slightly p-doped for FET), and a floating gate separated from the channel region by a gate oxide, a passivation layer covering the floating gate, and a sensing layer supported by the passivation layer, the sensing layer comprising nanofibers.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: February 5, 2019
    Assignee: Honeywell International Inc.
    Inventors: Cornel P. Cobianu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu, Alisa Stratulat, Mihai Brezeanu
  • Publication number: 20180348185
    Abstract: A metal oxide heterostructure includes mixing a first precursor and a second precursor to form a precursor aqueous mixture, adding at least one constituent to the precursor aqueous mixture to form a first solution, adding a nanostructuring reagent to the first solution to form a second solution, sonochemically treating the second solution to provide a metal oxide powder, filtering, washing, and drying the metal oxide powder to provide a metal oxide nanocomposite heterostructure for a sensing layer of a hydrogen sulfide sensor. A method for forming a hydrogen sulfide sensor includes the metal oxide heterostructure, forming a sensing material, contacting the sensing material with interdigitated electrodes to form a sensing layer, and thermally consolidating the sensing layer to form the hydrogen sulfide sensor.
    Type: Application
    Filed: August 9, 2018
    Publication date: December 6, 2018
    Applicant: HONEYWELL ROMANIA S. R. L.
    Inventors: Cornel P. COBIANU, Viorel Georgel DUMITRU, Bogdan-Catalin SERBAN, Alisa STRATULAT, Mihai BREZEANU, Octavian BUIU
  • Patent number: 10067107
    Abstract: A metal oxide heterostructure includes mixing a first precursor and a second precursor to form a precursor aqueous mixture, adding at least one constituent to the precursor aqueous mixture to form a first solution, adding a nanostructuring reagent to the first solution to form a second solution, sonochemically treating the second solution to provide a metal oxide powder, filtering, washing, and drying the metal oxide powder to provide a metal oxide nanocomposite heterostructure for a sensing layer of a hydrogen sulfide sensor. A method for forming a hydrogen sulfide sensor includes the metal oxide heterostructure, forming a sensing material, contacting the sensing material with interdigitated electrodes to form a sensing layer, and thermally consolidating the sensing layer to form the hydrogen sulfide sensor.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: September 4, 2018
    Assignee: Honeywell Romania s.r.l.
    Inventors: Cornel P. Cobianu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Alisa Stratulat, Mihai Brezeanu, Octavian Buiu
  • Publication number: 20180166911
    Abstract: A battery balancing system includes an energy balancing circuit. Multiple battery cells are coupled to the energy balancing circuit. A health assessment circuit is coupled to the multiple battery cells and configured to sense a state of health and a charge of each of the multiple battery cells. The balancing circuit switches energy between the multiple battery cells as a function of the sensed state of health and state of charge of each of the multiple battery cells to balance charge there between.
    Type: Application
    Filed: November 22, 2017
    Publication date: June 14, 2018
    Inventors: Octavian Ionescu, Octavian Buiu, Ion Georgescu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Mihai Brezeanu, Matei Serbanescu
  • Publication number: 20170261453
    Abstract: An illustrative humidity sensor may include a substrate and a sensing field effect transistor. The sensing field effect transistor may comprise a source formed on the substrate, a drain formed on the substrate, a gate, and a piezoelectric layer disposed over the gate. Another illustrative humidity sensor may comprise a substrate, a semi-conductor layer disposed over the substrate, a piezoelectric layer disposed over the semi-conductor layer, a first electrode disposed on the piezoelectric layer, and a second electrode disposed on the piezoelectric layer. In some instances, the piezoelectric layer may comprise aluminum nitride.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 14, 2017
    Inventors: Viorel Georgel Dumitru, Viorel Avramescu, Octavian Buiu, Mihai Brezeanu, Bogdan Serban
  • Patent number: 9759680
    Abstract: A diamond based oxygen sensor is able to function in harsh environment conditions. The oxygen sensor includes a gateless field effect transistor including a synthetic, quasi-intrinsic, hydrogen-passivated, monocrystalline diamond layer exhibiting a 2-dimension hole gas effect. The oxygen sensor also includes a sensing layer comprising yttrium-stabilized zirconia deposited onto a surface of the gateless field effect transistor.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: September 12, 2017
    Assignee: Honeywell International Inc.
    Inventors: Mihai Brezeanu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu
  • Publication number: 20170218179
    Abstract: Various embodiments disclosed relate to anti-static compositions and gloves made from the same. In various embodiments, the present invention provides a doped polyaniline comprising a dopant that is a polyacrylic acid; a polymethacrylic acid; a sulfonatocalixarene; a cyclodextrin sulfate; a compound having the structure: wherein R2 is chosen from substituted or unsubstituted (C1-C10)hydrocarbyl- and substituted or unsubstituted (C1-C10)hydrocarbyl-O—. L1 is substituted or unsubstituted (C1-C10)hydrocarbylene. L2 is chosen from a bond, —O—, —O—C(O)—, and —NH—C(O)—, and n is about 1 to about 100,000; a salt thereof; or a combination thereof.
    Type: Application
    Filed: February 2, 2017
    Publication date: August 3, 2017
    Inventors: Bogdan-Catalin Serban, Cornel P. Cobianu, Octavian Buiu, Mihai Brezeanu, Alisa Stratulat, Viorel Georgel Dumitru, Andrea Piesker, Christiane Saunier, Eric Farin
  • Publication number: 20170097313
    Abstract: A relative humidity sensor is disclosed. The relative humidity sensor includes a first electrode and a second electrode disposed above a dielectric substrate. A sensitive layer is disposed above the first electrode and the second electrode, where the sensitive layer is formed from a doped conductive polymer.
    Type: Application
    Filed: September 29, 2016
    Publication date: April 6, 2017
    Inventors: Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu, Mihai Brezeanu
  • Patent number: 9604191
    Abstract: The present disclosure relates to a nanostructured palladium-based flammable gas detector synthesized using sonochemistry. The nanostructured palladium-based flammable gas detectors may use nanostructured sensing materials to allow reduction of power consumption, where the nanostructures reduce power consumption due to their large specific area and increased porosity.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: March 28, 2017
    Assignee: Honeywell International Inc.
    Inventors: Cornel P. Cobianu, Bogdan-Catalin Serban, Alisa Stratulat, Viorel Georgel Dumitru, Mihai Brezeanu, Octavian Buiu
  • Publication number: 20170067849
    Abstract: A gas sensor includes a field effect transistor supported on an oxide layer of a substrate, the field effect transistor having a doped source (p+ doped for T-FET and n+ doped for FET) and an n+ doped drain separated by an channel region (intrinsic for T-FET or slightly p-doped for FET), and a floating gate separated from the channel region by a gate oxide, a passivation layer covering the floating gate, and a sensing layer supported by the passivation layer, the sensing layer comprising nanofibers.
    Type: Application
    Filed: August 29, 2016
    Publication date: March 9, 2017
    Inventors: Cornel P. Cobianu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu, Alisa Stratulat, Mihai Brezeanu
  • Patent number: 9557229
    Abstract: A dynamic strain sensor includes a strain sensitive transistor and a light emitting diode coupled to the strain sensitive transistor. The dynamic strain sensor can include a piezoelectric layer incorporated into the structure of the strain sensitive transistor. The dynamic strain sensor can sense dynamic strain and can measure and monitor the dynamic strain wirelessly.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: January 31, 2017
    Assignee: Honeywell Romania s.r.l.
    Inventors: Viorel Georgel Dumitru, Stefan Dan Costea, Ion Georgescu, Mihai Brezeanu
  • Patent number: 9448655
    Abstract: The present disclosure relates to a touch sensor and touch sensitive display having a plurality of first and second conductive lines arranged substantially orthogonally with a sensing material to sense a change in capacitance between them. The first and second conductive lines and the sensing material defining an array of sensitive transistors.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: September 20, 2016
    Assignee: Honeywell International Inc.
    Inventors: Viorel Georgel Dumitru, Stefan Dan Costea, Ion Georgescu, Mihai Brezeanu, Bogdan-Catalin Serban
  • Publication number: 20160238552
    Abstract: A diamond based oxygen sensor is able to function in harsh environment conditions. The oxygen sensor includes a gateless field effect transistor including a synthetic, quasi-intrinsic, hydrogen-passivated, monocrystalline diamond layer exhibiting a 2-dimension hole gas effect. The oxygen sensor also includes a sensing layer comprising yttrium-stabilized zirconia deposited onto a surface of the gateless field effect transistor.
    Type: Application
    Filed: April 22, 2016
    Publication date: August 18, 2016
    Inventors: Mihai Brezeanu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu
  • Patent number: 9349801
    Abstract: A diamond based oxygen sensor is able to function in harsh environment conditions. The oxygen sensor includes a gateless field effect transistor including a synthetic, quasi-intrinsic, hydrogen-passivated, monocrystalline diamond layer exhibiting a 2-dimension hole gas effect. The oxygen sensor also includes a sensing layer comprising yttrium-stabilized zirconia deposited onto a surface of the gateless field effect transistor.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: May 24, 2016
    Assignee: Honeywell International Inc.
    Inventors: Mihai Brezeanu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu
  • Patent number: 9291594
    Abstract: The present disclosure relates to a carbon dioxide sensor able to function in harsh environment, conditions. The carbon dioxide sensor can include a gate-less field effect transistor including a synthetic, quasi-intrinsic, hydrogen-passivated, single-crystal diamond layer exhibiting a 2-dimension hole gas effect, and a sensing layer comprising both a polymer and a hygroscopic material deposited onto a surface of the gate-less field effect transistor.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 22, 2016
    Assignee: Honeywell International Inc.
    Inventors: Mihai Brezeanu, Bogdan Catalin Serban, Octavian Buiu, Viorel Georgel Dumitru