Patents by Inventor Stefan D. Costea

Stefan D. Costea 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: 9863903
    Abstract: 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: Grant
    Filed: August 1, 2013
    Date of Patent: January 9, 2018
    Assignee: Honeywell International Inc.
    Inventors: Viorel G. Dumitru, Stefan D. Costea, Mihai Brezeanu
  • Patent number: 9660169
    Abstract: Sensors and methods of operating sensors are described herein. One sensor includes a number of III-nitride strain sensitive devices and a number of passive electrical components that connects each of them to one of the III-nitride strain sensitive devices.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: May 23, 2017
    Assignee: Honeywell International Inc.
    Inventors: Viorel G. Dumitru, Ion Georgescu, Stefan D. Costea, Mihai Brezeanu
  • Publication number: 20160161432
    Abstract: Condensation sensor systems and methods are described herein. Methods for forming a condensation sensor can include depositing a Ill-nitride on a substrate via sputtering, and implementing conductive contacts on the deposited Ill-nitride via a shadow mask.
    Type: Application
    Filed: August 1, 2013
    Publication date: June 9, 2016
    Inventors: Viorel G. DUMITRU, Stefan D. COSTEA, Mihai BREZEANU
  • Publication number: 20150035092
    Abstract: Sensors and methods of operating sensors are described herein. One sensor includes a number of III-nitride strain sensitive devices and a number of passive electrical components that connects each of them to one of the III-nitride strain sensitive devices.
    Type: Application
    Filed: September 22, 2011
    Publication date: February 5, 2015
    Inventors: Viorel G. Dumitru, Ion Georgescu, Stefan D. Costea, Mihai Brezeanu
  • Patent number: 7723961
    Abstract: A battery protection and monitoring system includes a plurality of MAFET (Mechanically Actuated Field Effect Transistor) switches, wherein each MAFET switch among the MAFET switches is capable of switching from an open switch condition to a closed switch condition or vice versa, such that the plurality of MAFET switches are connectable to a battery. Such a system further includes one or more transistors associated with and which communicate electrically with at least one MAFET switch among the MAFET switches. A PPTC (Polymeric Positive Temperature Coefficient) device is also associated with the transistors and the MAFET switches, such that the PPTC device, the MAFET switches and the transistors operate in association with one another and the open switch condition or the closed switch condition of the plurality of MAFET switches to identify, monitor and thus prevent at least one dangerous condition associated with the battery.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: May 25, 2010
    Assignee: Honeywell International Inc.
    Inventors: Cornel P. Cobianu, Viorel-Georgel Dumitru, Ion Georgescu, Mihai Gologanu, Stefan D. Costea
  • Publication number: 20090039832
    Abstract: A battery protection and monitoring system includes a plurality of MAFET (Mechanically Actuated Field Effect Transistor) switches, wherein each MAFET switch among the MAFET switches is capable of switching from an open switch condition to a closed switch condition or vice versa, such that the plurality of MAFET switches are connectable to a battery. Such a system further includes one or more transistors associated with and which communicate electrically with at least one MAFET switch among the MAFET switches. A PPTC (Polymeric Positive Temperature Coefficient) device is also associated with the transistors and the MAFET switches, such that the PPTC device, the MAFET switches and the transistors operate in association with one another and the open switch condition or the closed switch condition of the plurality of MAFET switches to identify, monitor and thus prevent at least one dangerous condition associated with the battery.
    Type: Application
    Filed: August 7, 2007
    Publication date: February 12, 2009
    Inventors: Cornel P. Cobianu, Viorel-Georgel Dumitru, Ion Georgescu, Mihai Gologanu, Stefan D. Costea