Patents by Inventor Radu Andrei

Radu Andrei 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: 9831873
    Abstract: Electronic logic gates that operate using N logic state levels, where N is greater than 2, and methods of operating such gates. The electronic logic gates operate according to truth tables. At least two input signals each having a logic state that can range over more than two logic states are provided to the logic gates. The logic gates each provide an output signal that can have one of N logic states. Examples of gates described include NAND/NAND gates having two inputs A and B and NAND/NAND gates having three inputs A, B, and C, where A, B and C can take any of four logic states. Systems using such gates are described, and their operation illustrated. Optical logic gates that operate using N logic state levels are also described.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: November 28, 2017
    Assignee: California Institute of Technology
    Inventors: Adrian Stoica, Radu Andrei
  • Publication number: 20170244410
    Abstract: Electronic logic gates that operate using N logic state levels, where N is greater than 2, and methods of operating such gates. The electronic logic gates operate according to truth tables. At least two input signals each having a logic state that can range over more than two logic states are provided to the logic gates. The logic gates each provide an output signal that can have one of N logic states. Examples of gates described include NAND/NAND gates having two inputs A and B and NAND/NAND gates having three inputs A, B, and C, where A, B and C can take any of four logic states. Systems using such gates are described, and their operation illustrated. Optical logic gates that operate using N logic state levels are also described.
    Type: Application
    Filed: February 10, 2015
    Publication date: August 24, 2017
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Adrian Stoica, Radu Andrei
  • Publication number: 20160233862
    Abstract: Electronic logic gates that operate using N logic state levels, where N is greater than 2, and methods of operating such gates. The electronic logic gates operate according to truth tables. At least two input signals each having a logic state that can range over more than two logic states are provided to the logic gates. The logic gates each provide an output signal that can have one of N logic states. Examples of gates described include NAND/NAND gates having two inputs A and B and NAND/NAND gates having three inputs A, B, and C, where A, B and C can take any of four logic states. Systems using such gates are described, and their operation illustrated. Optical logic gates that operate using N logic state levels are also described.
    Type: Application
    Filed: February 10, 2015
    Publication date: August 11, 2016
    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
    Inventors: Adrian Stoica, Radu Andrei
  • Patent number: 8975922
    Abstract: Electronic logic gates that operate using N logic state levels, where N is greater than 2, and methods of operating such gates. The electronic logic gates operate according to truth tables. At least two input signals each having a logic state that can range over more than two logic states are provided to the logic gates. The logic gates each provide an output signal that can have one of N logic states. Examples of gates described include NAND/NAND gates having two inputs A and B and NAND/NAND gates having three inputs A, B, and C, where A, B and C can take any of four logic states. Systems using such gates are described, and their operation illustrated. Optical logic gates that operate using N logic state levels are also described.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: March 10, 2015
    Assignee: California Institute of Technology
    Inventors: Adrian Stoica, Radu Andrei, David Zhu, Mohammad Mehdi Mojarradi, Tuan A. Vo
  • Publication number: 20090295430
    Abstract: A methodology for describing an input-output behavior of a multi-level logic gate to process simultaneously a multiplicity of independent Boolean logic functions, with each Boolean function processing signals carried on an individual, separate channel. An embodiment may simultaneously process the same data with the same function or with different functions, multiple data with the same function, or multiple data with different functions. In addition, multi-level logic signals (having more than two levels) may be processed, so that a higher communication bandwidth may be obtained without necessarily increasing the number of traces (wires). Other embodiments are described and claimed.
    Type: Application
    Filed: February 26, 2009
    Publication date: December 3, 2009
    Applicant: California Institute of Technology
    Inventors: Adrian Stoica, Radu Andrei
  • Patent number: 7005852
    Abstract: A display device is described having a panel and all-metal electronics formed on a surface of the panel and operable to control operation of a plurality of basic visible elements associated with the panel.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: February 28, 2006
    Assignee: Integrated Magnetoelectronics Corporation
    Inventors: Radu Andrei, Richard Spitzer, E. James Torok
  • Patent number: 6992919
    Abstract: A three-dimensional circuit and methods for fabricating such a circuit are described. The three-dimensional circuit includes a plurality of stacked levels on a substrate. Each level includes a plurality of all-metal circuit components exhibiting giant magnetoresistance and arranged in two dimensions, the circuit further includes an interconnect for providing interconnections between the circuit components on different ones of the plurality of levels.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: January 31, 2006
    Assignee: Integrated Magnetoelectronics Corporation
    Inventors: Radu Andrei, Richard Spitzer, E. James Torok
  • Publication number: 20050083743
    Abstract: A nonvolatile sequential machine is described which includes a semiconductor controller operable to control operation of the nonvolatile sequential machine according to a state machine comprising a plurality of states. The nonvolatile sequential machine further includes a plurality of state registers operable to store the plurality of states. The state registers comprise nonvolatile random-access memory operation of which is based on giant magnetoresistance.
    Type: Application
    Filed: September 7, 2004
    Publication date: April 21, 2005
    Inventors: Radu Andrei, Richard Spitzer, E. Torok, Stephen Nuspl
  • Publication number: 20040196704
    Abstract: A display device is described having a panel and all-metal electronics formed on a surface of the panel and operable to control operation of a plurality of basic visible elements associated with the panel.
    Type: Application
    Filed: March 22, 2004
    Publication date: October 7, 2004
    Applicant: Integrated Magnetoelectronics Corporation
    Inventors: Radu Andrei, Richard Spitzer, E. James Torok
  • Publication number: 20040183198
    Abstract: A three-dimensional circuit and methods for fabricating such a circuit are described. The three-dimensional circuit includes a plurality of stacked levels on a substrate. Each level includes a plurality of all-metal circuit components exhibiting giant magnetoresistance and arranged in two dimensions, the circuit further includes an interconnect for providing interconnections between the circuit components on different ones of the plurality of levels.
    Type: Application
    Filed: December 8, 2003
    Publication date: September 23, 2004
    Applicant: Integrated Magnetoelectronics Corporation
    Inventors: Radu Andrei, Richard Spitzer, E. James Torok