Patents by Inventor Mihai Brezeanu
Mihai Brezeanu 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).
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Publication number: 20240001804Abstract: 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: ApplicationFiled: September 15, 2023Publication date: January 4, 2024Inventors: Octavian Ionescu, Octavian Buiu, Ion Georgescu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Mihai Brezeanu, Matei Serbanescu
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Patent number: 11820253Abstract: 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: GrantFiled: April 7, 2021Date of Patent: November 21, 2023Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Octavian Ionescu, Octavian Buiu, Ion Georgescu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Mihai Brezeanu, Matei Serbanescu
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Publication number: 20210221251Abstract: 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: ApplicationFiled: April 7, 2021Publication date: July 22, 2021Inventors: Octavian Ionescu, Octavian Buiu, Ion Georgescu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Mihai Brezeanu, Matei Serbanescu
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Patent number: 11034259Abstract: 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: GrantFiled: November 22, 2017Date of Patent: June 15, 2021Assignee: Honeywell International Inc.Inventors: Octavian Ionescu, Octavian Buiu, Ion Georgescu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Mihai Brezeanu, Matei Serbanescu
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Patent number: 10663425Abstract: 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: GrantFiled: December 28, 2018Date of Patent: May 26, 2020Assignee: Honeywell International Inc.Inventors: Cornel P. Cobianu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu, Alisa Stratulat, Mihai Brezeanu
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Patent number: 10634636Abstract: A relative humidity sensor is disclosed. The relative humidity sensor includes a first electrode and a second electrode disposed above a dielectric substrate. A humidity sensitive layer is disposed above at least one of the first electrode and the second electrode, where the humidity sensitive layer comprises a curable composition comprising cellulose acetate butyrate and a hydrophobic filler. In some embodiments, a dust protection layer is disposed above the humidity sensitive layer.Type: GrantFiled: February 2, 2017Date of Patent: April 28, 2020Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Bogdan-Catalin Serban, Mihai Brezeanu, Octavian Buiu, Cornel P. Cobianu
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Patent number: 10585058Abstract: An illustrative humidity sensor may include a substrate having a source and a drain, wherein the drain is laterally spaced from the source. A gate stack is provided in the space between the source and the drain to form a transistor. The gate stack may include a gate insulator situated on the substrate to form a gate insulator/substrate interface. The gate stack may further include a barrier layer above the gate insulator. The barrier layer may be configured to act as a barrier to mobile charge, humidity and/or other contaminates, and may help prevent such contaminates from reaching the gate insulator/substrate interface. The gate stack may further include a humidity sensing layer above the barrier layer. The humidity sensing layer, when exposed to humidity, may modulate the conduction channel in the substrate under the gate insulator and between the source and the drain. In some cases, the humidity level may be determined by monitoring the current flowing between the source and drain.Type: GrantFiled: May 12, 2017Date of Patent: March 10, 2020Assignee: Honeywell International Inc.Inventors: Cornel Cobianu, Alisa Stratulat, Bogdan Serban, Octavian Buiu, Cazimir Gabriel Bostan, Mihai Brezeanu, Stefan Dan Costea, Richard Davis
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Patent number: 10527598Abstract: 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: GrantFiled: August 9, 2018Date of Patent: January 7, 2020Assignee: HONEYWELL ROMANIA S.R.L.Inventors: Cornel P. Cobianu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Alisa Stratulat, Mihai Brezeanu, Octavian Buiu
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Patent number: 10429333Abstract: 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 at least one of the first electrode and the second electrode, where the sensitive layer is formed from a composition including a polyimide and a hydrophobic filler. A dust protection layer is disposed above the sensitive layer.Type: GrantFiled: April 4, 2016Date of Patent: October 1, 2019Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Bogdan-Catalin Serban, Cornel P. Cobianu, Mihai Brezeanu, Octavian Buiu, Cazimir Gabriel Bostan, Alisa Stratulat
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Patent number: 10324053Abstract: 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: GrantFiled: March 10, 2017Date of Patent: June 18, 2019Assignee: Honeywell International Inc.Inventors: Viorel Georgel Dumitru, Viorel Avramescu, Octavian Buiu, Mihai Brezeanu, Bogdan Serban
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Publication number: 20190154630Abstract: 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: ApplicationFiled: December 28, 2018Publication date: May 23, 2019Inventors: Cornel P. Cobianu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu, Alisa Stratulat, Mihai Brezeanu
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Patent number: 10254217Abstract: In an embodiment, a benzene sensor comprises a substrate having an iodine complex disposed thereon, a radiation source configured to project UV radiation onto the complex, and a UV detector configured to detect a UV reflection off of the substrate having the iodine complex. The iodine complex can include a cyclodextrine-iodine complex such as an alpha-cyclodextrine-iodine complex, a ?-cyclodextrine iodine complex, or any combination thereof.Type: GrantFiled: November 11, 2015Date of Patent: April 9, 2019Assignee: Honeywell International, Inc.Inventors: Bogdan Serban, Octavian Buiu, Mihai Brezeanu, Cornel Cobianu, Cazimir Gabriel Bostan, Cristian Diaconu
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Patent number: 10246573Abstract: 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: GrantFiled: February 2, 2017Date of Patent: April 2, 2019Assignee: 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
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Patent number: 10197526Abstract: 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: GrantFiled: August 29, 2016Date of Patent: February 5, 2019Assignee: Honeywell International Inc.Inventors: Cornel P. Cobianu, Bogdan-Catalin Serban, Viorel Georgel Dumitru, Octavian Buiu, Alisa Stratulat, Mihai Brezeanu
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Publication number: 20180348185Abstract: 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: ApplicationFiled: August 9, 2018Publication date: December 6, 2018Applicant: HONEYWELL ROMANIA S. R. L.Inventors: Cornel P. COBIANU, Viorel Georgel DUMITRU, Bogdan-Catalin SERBAN, Alisa STRATULAT, Mihai BREZEANU, Octavian BUIU
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Patent number: 10067107Abstract: 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: GrantFiled: July 6, 2015Date of Patent: September 4, 2018Assignee: Honeywell Romania s.r.l.Inventors: Cornel P. Cobianu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Alisa Stratulat, Mihai Brezeanu, Octavian Buiu
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Publication number: 20180166911Abstract: 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: ApplicationFiled: November 22, 2017Publication date: June 14, 2018Inventors: Octavian Ionescu, Octavian Buiu, Ion Georgescu, Viorel Georgel Dumitru, Bogdan-Catalin Serban, Mihai Brezeanu, Matei Serbanescu
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Patent number: 9932449Abstract: A hydrogen sulfide sensor is disclosed. The hydrogen sulfide sensor includes a substrate, a pair of interdigitated electrodes supported by the substrate, and a nanocomposite based sensing layer deposited on the interdigitated electrodes and configured to interact with hydrogen sulfide.Type: GrantFiled: July 6, 2015Date of Patent: April 3, 2018Assignee: Honeywell Romania s.r.l.Inventors: Bogdan-Catalin Serban, Octavian Buiu, Cornel P. Cobianu, Mihai Brezeanu
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Patent number: 9863903Abstract: Condensation sensor systems and methods are described herein. Methods for forming a condensation sensor can include depositing a III-nitride on a substrate via sputtering, and implementing conductive contacts on the deposited III-nitride via a shadow mask.Type: GrantFiled: August 1, 2013Date of Patent: January 9, 2018Assignee: Honeywell International Inc.Inventors: Viorel G. Dumitru, Stefan D. Costea, Mihai Brezeanu
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Publication number: 20170363539Abstract: In an embodiment, a benzene sensor comprises a substrate having an iodine complex disposed thereon, a radiation source configured to project UV radiation onto the complex, and a UV detector configured to detect a UV reflection off of the substrate having the iodine complex. The iodine complex can include a cyclodextrine-iodine complex such as an alpha-cyclodextrine-iodine complex, a ?-cyclodextrine iodine complex, or any combination thereof.Type: ApplicationFiled: November 11, 2015Publication date: December 21, 2017Inventors: Bogdan Serban, Octavian Buiu, Mihai Brezeanu, Cornel Cobianu, Cazimir Gabriel Bostan, Cristian Diaconu