Challa; Ashok

Patent Applications and Registrations

Patent applications and USPTO patent grants for Challa; Ashok.The latest application filed is for "device including a sidewall schottky interface".

Company Profile

2.45.44

Challa; Ashok - Sandy UT
Challa; Ashok - Milpitas CA
Challa; Ashok - San Jose CA
Challa; Ashok - Salt Lake City UT
Challa; Ashok - US
Challa, Ashok - West Jordan UT

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 10,868,113 - Yedinak , et al. December 15, 2	2020-12-15
Device including a sidewall Schottky interface Grant 10,396,216 - Su , et al. A	2019-08-27
Device Including A Sidewall Schottky Interface App 20180323273 - SU; Yi ; et al.	2018-11-08
Trench-based Power Semiconductor Devices With Increased Breakdown Voltage Characteristics App 20180012958 - YEDINAK; Joseph A. ; et al.	2018-01-11
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 9,748,329 - Yedinak , et al. August 29, 2	2017-08-29
Junction-less insulated gate current limiter device Grant 9,679,890 - Sarkar , et al. June 13, 2	2017-06-13
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 9,391,193 - Yedinak , et al. July 12, 2	2016-07-12
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 9,293,526 - Yedinak , et al. March 22, 2	2016-03-22
Trench-based Power Semiconductor Devices With Increased Breakdown Voltage Characteristics App 20150206937 - Yedinak; Joseph A. ; et al.	2015-07-23
Trench-based Power Semiconductor Devices With Increased Breakdown Voltage Characteristics App 20150194521 - Yedinak; Joseph A. ; et al.	2015-07-09
Direct-drain trench FET with source and drain isolation Grant 9,018,700 - Challa April 28, 2	2015-04-28
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 8,963,212 - Yedinak , et al. February 24, 2	2015-02-24
Junction-less Insulated Gate Current Limiter Device App 20150043114 - SARKAR; Tirthajyoti ; et al.	2015-02-12
Methods related to power semiconductor devices with thick bottom oxide layers Grant 8,936,985 - Challa , et al. January 20, 2	2015-01-20
Direct-drain Trench Fet With Source And Drain Isolation App 20140264567 - CHALLA; Ashok	2014-09-18
Shielded gate field effect transistors Grant 8,803,207 - Grebs , et al. August 12, 2	2014-08-12
Power semiconductor devices having termination structures Grant 8,786,045 - Challa , et al. July 22, 2	2014-07-22
Field effect transistor with gated and non-gated trenches Grant 8,742,401 - Yilmaz , et al. June 3, 2	2014-06-03
FET device having ultra-low on-resistance and low gate charge Grant 8,710,584 - Bencuya , et al. April 29, 2	2014-04-29
Field Effect Transistor With Gated And Non-gated Trenches App 20140054691 - Yilmaz; Hamza ; et al.	2014-02-27
Trench-based Power Semiconductor Devices With Increased Breakdown Voltage Characteristics App 20140048869 - Yedinak; Joseph A. ; et al.	2014-02-20
Trench-based Power Semiconductor Devices With Increased Breakdown Voltage Characteristics App 20140042532 - Yedinak; Joseph A. ; et al.	2014-02-13
MOSFET device with thick trench bottom oxide Grant 8,598,654 - Park , et al. December 3, 2	2013-12-03
Field effect transistor with source, heavy body region and shielded gate Grant 8,592,895 - Yilmaz , et al. November 26, 2	2013-11-26
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 8,564,024 - Yedinak , et al. October 22, 2	2013-10-22
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 8,304,829 - Yedinak , et al. November 6, 2	2012-11-06
Mosfet Device With Thick Trench Bottom Oxide App 20120235230 - Park; Chanho ; et al.	2012-09-20
Methods Of Making Power Semiconductor Devices With Thick Bottom Oxide Layer App 20120220091 - Challa; Ashok ; et al.	2012-08-30
Method of Forming a FET Having Ultra-low On-resistance and Low Gate Charge App 20120171828 - Bencuya; Izak ; et al.	2012-07-05
Trench-based power semiconductor devices with increased breakdown voltage characteristics Grant 8,193,581 - Yedinak , et al. June 5, 2	2012-06-05
Synchronous buck converter using shielded gate field effect transistors Grant 8,193,570 - Sapp , et al. June 5, 2	2012-06-05
Methods of making power semiconductor devices with thick bottom oxide layer Grant 8,143,124 - Challa , et al. March 27, 2	2012-03-27
Method of forming a FET having ultra-low on-resistance and low gate charge Grant 8,101,484 - Bencuya , et al. January 24, 2	2012-01-24
Field effect transistor with self-aligned source and heavy body regions App 20110303975 - Yilmaz; Hamza ; et al.	2011-12-15
3D channel architecture for semiconductor devices Grant 8,072,027 - Kim , et al. December 6, 2	2011-12-06
Method for Forming Shielded Gate Field Effect Transistors App 20110212586 - Grebs; Thomas E. ; et al.	2011-09-01
Trenched shield gate power semiconductor devices and methods of manufacture Grant 7,982,265 - Challa , et al. July 19, 2	2011-07-19
Synchronous buck converter using shielded gate field effect transistors App 20110163732 - Sapp; Steven ; et al.	2011-07-07
Power Semiconductor Devices Having Termination Structures App 20110001189 - Challa; Ashok ; et al.	2011-01-06
Power semiconductor devices having termination structures and methods of manufacture Grant 7,855,415 - Challa , et al. December 21, 2	2010-12-21
3d Channel Architecture For Semiconductor Devices App 20100308402 - Kim; Suku ; et al.	2010-12-09
Field Effect Transistor with Self-aligned Source and Heavy Body Regions and Method of Manufacturing Same App 20100258855 - Yilmaz; Hamza ; et al.	2010-10-14
Method of Forming a FET Having Ultra-low On-resistance and Low Gate Charge App 20100258864 - Bencuya; Izak ; et al.	2010-10-14
Structure and method for improving shielded gate field effect transistors Grant 7,768,064 - Sapp , et al. August 3, 2	2010-08-03
Method and structure for forming a shielded gate field effect transistor Grant 7,767,524 - Yilmaz , et al. August 3, 2	2010-08-03
Method of forming a FET having ultra-low on-resistance and low gate charge Grant 7,745,289 - Bencuya , et al. June 29, 2	2010-06-29
Trench-Based Power Semiconductor Devices With Increased Breakdown Voltage Characteristics App 20100140695 - Yedinak; Joseph A. ; et al.	2010-06-10
Trench-Based Power Semiconductor Devices with Increased Breakdown Voltage Characteristics App 20100140689 - Yedinak; Joseph A. ; et al.	2010-06-10
Trench-Based Power Semiconductor Devices with Increased Breakdown Voltage Characteristics App 20100140697 - Yedinak; Joseph A. ; et al.	2010-06-10
Method of forming high density trench FET with integrated Schottky diode Grant 7,713,822 - Thorup , et al. May 11, 2	2010-05-11
Method and Structure for Forming a Shielded Gate Field Effect Transistor App 20100038708 - Yilmaz; Hamza ; et al.	2010-02-18
Power semiconductor devices and methods of manufacture Grant 7,638,841 - Challa December 29, 2	2009-12-29
Method of forming a shielded gate field effect transistor Grant 7,625,799 - Yilmaz , et al. December 1, 2	2009-12-01
Method of Forming a Shielded Gate Field Effect Transistor App 20090191678 - Yilmaz; Hamza ; et al.	2009-07-30
Method for Forming Shielded Gate Field Effect Transistor Using Spacers App 20090111231 - Grebs; Thomas E. ; et al.	2009-04-30
Shielded gate field effect transistor Grant 7,514,322 - Yilmaz , et al. April 7, 2	2009-04-07
Method of Forming High Density Trench FET with Integrated Schottky Diode App 20090035900 - Thorup; Paul ; et al.	2009-02-05
Method of forming trench gate FETs with reduced gate to drain charge Grant 7,485,532 - Marchant , et al. February 3, 2	2009-02-03
High density trench FET with integrated Schottky diode and method of manufacture Grant 7,446,374 - Thorup , et al. November 4, 2	2008-11-04
Shielded Gate Field Effect Transistor App 20080258213 - Yilmaz; Hamza ; et al.	2008-10-23
Trench FET with improved body to gate alignment Grant 7,416,948 - Kraft , et al. August 26, 2	2008-08-26
Power Semiconductor Devices with Barrier Layer to Reduce Substrate Up-Diffusion and Methods of Manufacture App 20080197407 - Challa; Ashok ; et al.	2008-08-21
Method of Forming Trench Gate FETs with Reduced Gate to Drain Charge App 20080166846 - Marchant; Bruce D. ; et al.	2008-07-10
Charge balance field effect transistor Grant 7,393,749 - Yilmaz , et al. July 1, 2	2008-07-01
Trenched Shield Gate Power Semiconductor Devices and Methods of Manufacture App 20080150020 - Challa; Ashok ; et al.	2008-06-26
Power Semiconductor Devices Having Termination Structures and Methods of Manufacture App 20080135931 - Challa; Ashok ; et al.	2008-06-12
Methods of Making Power Semiconductor Devices with Thick Bottom Oxide Layer App 20080138953 - Challa; Ashok ; et al.	2008-06-12
Trench gate FETs with reduced gate to drain charge Grant 7,382,019 - Marchant , et al. June 3, 2	2008-06-03
Power semiconductor devices and methods of manufacture Grant 7,345,342 - Challa , et al. March 18, 2	2008-03-18
Structure And Method For Improving Shielded Gate Field Effect Transistors App 20080017920 - Sapp; Steven ; et al.	2008-01-24
High density trench FET with integrated Schottky diode and method of manufacture App 20070221952 - Thorup; Paul ; et al.	2007-09-27
Trench FET with Improved Body to Gate Alignment App 20070082441 - Kraft; Nathan L. ; et al.	2007-04-12
Structures and methods for forming shielded gate field effect transistors App 20070032020 - Grebs; Thomas E. ; et al.	2007-02-08
Charge balance field effect transistor App 20060281249 - Yilmaz; Hamza ; et al.	2006-12-14
Structure and method for forming trench gate FETs with reduced gate to drain charge App 20060237781 - Marchant; Bruce D. ; et al.	2006-10-26
Power semiconductor devices and methods of manufacture App 20060214221 - Challa; Ashok ; et al.	2006-09-28
Power semiconductor devices and methods of manufacture App 20060214222 - Challa; Ashok ; et al.	2006-09-28
Power semiconductor devices and methods of manufacture App 20050167742 - Challa, Ashok ; et al.	2005-08-04
Method of forming a FET having ultra-low on-resistance and low gate charge App 20050153497 - Bencuya, Izak ; et al.	2005-07-14
Method of forming vertical mosfet with ultra-low on-resistance and low gate charge App 20040142523 - Bencuya, Izak ; et al.	2004-07-22
Vertical MOSFET with ultra-low resistance and low gate charge Grant 6,696,726 - Bencuya , et al. February 24, 2	2004-02-24
Trench structure for semiconductor devices Grant 6,683,363 - Challa January 27, 2	2004-01-27
Trench structure for semiconductor devices App 20030006452 - Challa, Ashok	2003-01-09

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