Jason V Sanders

US Patent:

8115343, Feb 14, 2012

Filed:

May 22, 2009

Appl. No.:

12/471229

Inventors:

Jason Sanders - Los Angeles CA, US
Andras Kuthi - Thousand Oaks CA, US
Martin A. Gundersen - San Gabriel CA, US
William Henry Moore - Canoga Park CA, US

Assignee:

University of Southern California - Los Angeles CA

International Classification:

H03K 3/00

US Classification:

307108

Abstract:

This invention relates to a pulse generator circuit for delivering a short high current pulse to a load. This pulse generator comprises a junction recovery diode, a switch, a first resonant circuit and a second resonant circuit. The diode may be configured to store charges in its depletion layer when there is a forward flow of a current and to rapidly switch open after the depletion layer is discharged by a reverse flow of a current. After the diode rapidly switch opens, the pulse generator may provide a reverse current to the load. This pulse generator may be configured to generate at least one pulse that is having a length of no more than 100 nanoseconds at the full-width-at-half-maximum and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver one pulse or plurality of pulses to biological cells such as tumor cells.

US Patent:

8120207, Feb 21, 2012

Filed:

Feb 9, 2010

Appl. No.:

12/703078

Inventors:

Jason Sanders - Los Angeles CA, US
Andras Kuthi - Thousand Oaks CA, US
Martin A. Gundersen - San Gabriel CA, US
William Henry Moore - Canoga Park CA, US

Assignee:

University of Southern California - Los Angeles CA

International Classification:

H03K 3/00

US Classification:

307108

Abstract:

This invention relates to a pulse generator circuit for delivering a short high current pulse to a load. This pulse generator comprises a junction recovery diode, a switch, a first resonant circuit and a second resonant circuit. The diode may be configured to store charges in its depletion layer when there is a forward flow of a current and to rapidly switch open after the depletion layer is discharged by a reverse flow of a current. After the diode rapidly switch opens, the pulse generator may provide a reverse current to the load. This pulse generator may be configured to generate at least one pulse that is having a length of no more than 100 nanoseconds at the full-width-at-half-maximum and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver one pulse or plurality of pulses to biological cells such as tumor cells.

US Patent:

20100116151, May 13, 2010

Filed:

Oct 28, 2009

Appl. No.:

12/607844

Inventors:

Dan Singleton - El Segundo CA, US
Jason Sanders - Los Angeles CA, US
Martin Gundersen - San Gabriel CA, US

Assignee:

UNIVERSITY OF SOUTHERN CALIFORNIA - Los Angeles CA

International Classification:

A23L 3/32

US Classification:

99451

Abstract:

An apparatus for treating food must, such as grape must, may include a food must chamber configured to apply an electric pulse to the food must in a manner that causes an electric field to be generated within the food must. A pulse generator may be configured to deliver an electric pulse to the chamber that has a pulse width of between 10 and 100 nanoseconds. The chamber and the pulse generator may be configured such that they cause the electric field that is generated within the food must to be at least 1 kV/cm.

US Patent:

20120294993, Nov 22, 2012

Filed:

Aug 2, 2012

Appl. No.:

13/565706

Inventors:

Dan Singleton - El Segundo CA, US
Jason Sanders - Los Angeles CA, US
Martin Gundersen - San Gabriel CA, US

Assignee:

UNIVERSITY OF SOUTHERN CALIFORNIA - Los Angeles CA

International Classification:

C12G 1/02

US Classification:

426237

Abstract:

An apparatus for treating food must, such as grape must, may include a food must chamber configured to apply an electric pulse to the food must in a manner that causes an electric field to be generated within the food must. A pulse generator may be configured to deliver an electric pulse to the chamber that has a pulse width of between 10 and 100 nanoseconds. The chamber and the pulse generator may be configured such that they cause the electric field that is generated within the food must to be at least 1 kV/cm.

US Patent:

20220337036, Oct 20, 2022

Filed:

Apr 18, 2022

Appl. No.:

17/722943

Inventors:

- Torrance CA, US
Mark A. Thomas - Redondo Beach CA, US
Alonzo Gomez - Los Angeles CA, US
Jason M. Sanders - La Crescenta CA, US

International Classification:

H01T 15/00

Abstract:

A plasma assisted spark ignition system includes an ignitor and a power supply. The first ignitor includes: a casing having a first end, a second end that forms a first electrode, and a longitudinally extending passage, a second electrode which protrudes longitudinally outward from an opening at the second end of the casing and laterally spaced inwardly to form a spark gap, and an electrical insulator (dielectric) surrounding a portion of the second electrode, and which has a terminus that is at least closely spaced to an interior surface of the end of the casing. The power supply supplies a plurality of voltage pulses to the ignitor per ignition event to generate a flash over on the dielectric. Subsequent pulses in an ignition event may be at lower amplitude than an initial pulse in the ignition event. Pulses may, for example, have a duration on the order of a nanosecond.

US Patent:

20220285922, Sep 8, 2022

Filed:

Mar 1, 2022

Appl. No.:

17/684085

Inventors:

- Torrance CA, US
Mark A. Thomas - Redondo Beach CA, US
Alonzo Gomez - Los Angeles CA, US
Jason M. Sanders - La Crescenta CA, US

International Classification:

H01T 15/00
H03H 7/06
H03K 3/017

Abstract:

A system and method for differentiating between different modes of pulsed electrical discharges via of an amplitude to time (ATC) conversion circuit is described. A bipolar ATC circuit is used to add together the positive and negative portions of an attenuated and filtered signal derived either from the voltage or current of a pulse. Alternatively, a unipolar ATC circuit may be employed. The resulting processed signal is compared against a reference voltage to generate an output signal that is active for the amount of time that the processed signal exceeds the reference voltage. Discharge mode is determined based on three factors: did a pulse occur, if a pulse occurred when did the pulse start relative to the original pulse event, and what is the duty cycle of the pulse. Subsequent pulse generated may be controlled accordingly

US Patent:

20200359491, Nov 12, 2020

Filed:

Apr 29, 2020

Appl. No.:

16/861658

Inventors:

- Torrance CA, US
Jason M. Sanders - Los Angeles CA, US
Mark Thomas - Torrance CA, US
Patrick Ford - Torrance CA, US
Daniel Singleton - Hermosa Beach CA, US

International Classification:

H05H 1/48

Abstract:

A system for generating and delivering a low temperature, wide, partially ionized tunable plasma stream is described. The system employs a fast rising, repetitive high voltage pulse generator, flowing gas, and a plasma head to produce the described atmospheric pressure plasma stream and its associated active species. The plasma head may have an exit slit with a relatively wide dimension to produce a relative wide plasma stream. Electrodes may be located proximate the exit slit, for example one in an interior of the plasma head via with gas flows toward the exit slit, and the other exterior to the plasma head and offset from the exit slit. The plasma may include baffle material to enhance a uniformity of flow through and across the exit slit. Plasma heads with having exit slit with different widths may be provided as a kit.

US Patent:

20200023308, Jan 23, 2020

Filed:

Jul 10, 2019

Appl. No.:

16/508069

Inventors:

- Torrance CA, US
William P. Schroeder - La Habra Heights CA, US
Jason M. Sanders - Los Angeles CA, US
Daniel Singleton - El Segundo CA, US
Mark Thomas - Redondo Beach CA, US
Patrick Ford - Redondo Beach CA, US
Martin Adolph Gundersen - San Gabriel CA, US

International Classification:

B01D 53/34
F24C 15/20

Abstract:

A method and system to treat cooking emissions (e.g., smoke) employs a nanosecond high voltage pulse generator and a transient pulsed plasma reactor. The system is used in a scheme that substantially reduces particulate matter produced in commercial charbroiling processes (e.g., cooking of hamburger meat). Both a reduction in the size distribution and total particulate mass is achieved using the method and system described herein.