Patents

#70

Energy Extraction And Utilization From The Parasitic Elements In Power Converters

Patent US 12512750
Status Granted
Inventor Jitaru, Ionel Dan
Application 18/373877
Assignee Rompower Technology Holdings, LLC
Filling Date 27 Sep 2023
Date of Patent 30 Dec 2025

#69

Magnetic Structures For Low Leakage Inductance And Very High Efficiency (Continuation-In-Part of 3rd Continuation)

Patent US 12462973
Status Granted
Inventor Jitaru, Ionel Dan
Application 19/227373
Assignee Rompower Technology Holdings, LLC
Filling Date 03 Jun 2025
Date of Patent 04 Nov 2025

#68

High Density Magnetic Structure (Continuation)

Patent US 12387865
Status Granted
Inventor Jitaru, Ionel Dan
Application 18/537511
Assignee Rompower Technology Holdings, LLC
Filling Date 12 Dec 2023
Date of Patent 12 Aug 2025

#67

Magnetic Structures For Low Leakage Inductance And Very High Efficiency (3rd Continuation)

Patent US 12322541
Status Granted
Inventor Jitaru, Ionel Dan
Application 18/368513
Assignee Rompower Technology Holdings, LLC
Filling Date 14 Sep 2023
Date of Patent 03 Jun 2025

#66

Planar Multilayer Transformer With Minimum Noise Injection In Between Primary And Secondary Winding

Patent US 12322535
Status Granted
Inventor Jitaru, Ionel Dan
Application 18/986636
Assignee Rompower Technology Holdings, LLC
Filling Date 18 Dec 2024
Date of Patent 03 Jun 2025

#65

Power Transformer For Minimum Noise Injection In Between Primary And Secondary Winding “Rompower Active Shield” (Continuation-In-Part)

Patent US 12132397
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/845963
Filling Date 21 Jun 2022
Date of Patent 29 Oct 2024

#64

Very High Efficiency Soft Switching Converter AKA the Adjud Converter (3rd Continuation)

Patent US 12057780
Status Granted
Inventor Jitaru, Ionel Dan
Application 18/238981
Assignee Rompower Technology Holdings, LLC
Filling Date 28 Aug 2023
Date of Patent 06 Aug 2024

#63

High Efficiency AC-DC Converter

Patent 11,996,785
Status Granted
Inventor Jitaru, Ionel; Savu, Andrei; Budica, Lucian
Application 18/513,318
Assignee Rompower Technology Holdings LLC
Filling Date 17 Nov 2023
Date of Patent 28 May 2024

#62

Energy Extraction from the Parasitic Elements in Power Converters

Patent 11,929,665
Status Granted
Inventor Jitaru, Ionel
Application 18/373,590
Assignee Rompower Technology Holdings, LLC.
Filling Date 27 Sep 2023
Date of Patent 12 Mar 2024

#61

Low Noise Multilayer Transformer (Continuation)

Patent 11,929,198
Status Granted
Inventor Jitaru, Ionel
Application 17/948,966
Assignee Rompower Technology Holdings, LLC.
Filling Date 22 Sep 2022
Date of Patent 12 Mar 2024

#60

Harvesting Energy From Parasitic Elements of A Power Converter (Continuation)

Patent 11,848,617
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/849,775
Assignee Rompower Technology Holdings, LLC.
Filling Date 27 Jun 2022
Date of Patent 19 Dec 2023

#59

High Density Magnetic Structure

Patent 11,842,835
Status Granted
Inventor Jitaru, Ionel Dan
Application 18/077,979
Assignee Rompwer Technology Holdings LLC.
Filling Date 08 Dec 2022
Date of Patent 12 Dec 2023

#58

Magnetic Structures For Low Leakage Inductance And Very High Efficiency (2nd Continuation)

Patent US 11763984
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/845,609
Assignee Rompower Technology Holdings LLC
Filling Date 21 Jun 2022
Date of Patent 19 Sep 2023

#57

Very High Efficiency Soft Switching Converter Aka The Adjud Converter (2nd Continuation)

Patent US 11742768
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/228,462
Filling Date 12 Apr 2021
Date of Patent 29 Aug 2023

#56

Phase-Shifted Full-Bridge Topology With Current Injection (Continuation-in-Part)

Patent US 11736029
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/496,861
Filling Date 08 Oct 2021
Date of Patent 22 Aug 2023

#55

Energy Injection In A Resonant Circuit With Initial Conditions (Divisional)

Patent US 11728723
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/495,245
Assignee Rompower Technology Holdings LLC
Filling Date 06 Oct 2021
Date of Patent 15 Aug 2023

#54

Self-Adjusting Current Injection Technology (2nd Continuation)

Patent US 11671027
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/495,170
Assignee Rompower Technology Holdings
Filling Date 06 Oct 2021
Date of Patent 06 Jun 2023

#53

Low Noise Multilayer Transformer

Patent US 11450470
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/524,495
Assignee Rompower Technology Holdings LLC
Filling Date 11 Nov 2021
Date of Patent 20 Sep 2022

#52

Harvesting Energy From Parasitic Elements Of A Power Converter

Patent US 11374500
Status Granted
Inventor Jitaru, Ionel Dan; Jitariu, Mihai Bogdan; Savu, Andrei Stefan
Application 17/428,943
Assignee Rompower Technology Holdings LLC
Filling Date 05 Aug 2021
Date of Patent 28 Jun 2022

#51

Power Transformer For Minimum Noise Injection In Between Primary And Secondary Winding “Rompower Active Shield”

Patent US 11374499
Status Granted
Inventor Jitaru, Ionel Dan
Application 16/732,240
Assignee Rompower Technology Holdings LLC
Filling Date 31 Dec 2019
Date of Patent 28 Jun 2022

#50

Energy Recovery From The Leakage Inductance Of The Transformer (2nd Continuation)

Patent US 11368097
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/694,610
Assignee Rompower Technology Holdings LLC
Filling Date 14 Mar 2022
Date of Patent 21 Jun 2022

#49

Magnetic Structures For Low Leakage Inductance And Very High Efficiency (Continuation in Part)

Patent US 11367565
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/189,096
Assignee Rompower Technology Holdings LLC
Filling Date 01 Mar 2021
Date of Patent 21 Jun 2022

#48

Energy Recovery From The Leakage Inductance Of The Transformer (Continuation)

Patent US 11277073
Status Granted
Inventor Jitaru, Ionel Dan
Application 16/866,516
Assignee Rompower Technology Holdings LLC
Filling Date 04 May 2020
Date of Patent 15 Mar 2022

#47

High Efficiency Passive Clamp (Divisional)

Patent US 11218078
Status Granted
Inventor Jitaru, Ionel Dan
Application 17/222,512
Assignee Rompower Technology Holdings LLC
Filling Date 05 Apr 2021
Date of Patent 04 Jan 2022

#46

Self-Adjusting Current Injection Technology (Continuation)

Patent US 11165360
Status Granted
Inventor Jitaru, Ionel Dan
Application 16/751,747
Assignee Rompower Technology Holdings LLC
Filling Date 04 Jan 2020
Date of Patent 02 Nov 2021

#45

Energy Injection in a Resonant Circuit with Initial Conditions

Patent 11,152,847
Status Granted
Inventor Jitaru, Ionel Dan
Application 15/825647
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 29 Nov 2017
Date of Patent 19 Oct 2021

#44

Phase-Shifted Full-Bridge Topology with Current Injection (Continuation)

Patent 11,146,177
Status Granted
Inventor Jitaru, Ionel Dan
Application 16/407905
Filling Date 09 May 2019
Date of Patent 12 Oct 2021

#43

Very High Efficiency Soft Switching Converter AKA the Adjud Converter (Continuation)

Patent 10,978,958
Status Granted
Inventor Jitaru, Ionel
Application 16/989812
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 10 Aug 2020
Date of Patent 13 Apr 2021

#42

High Efficiency Passive Clamp

Patent 10,972,014
Status Granted
Inventor Jitaru, Ionel
Application 16/775967
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 29 Jan 2020
Date of Patent 06 Apr 2021

#41

Magnetic Structures for Low Leakage Inductance and Very High Efficiency (Continuation)

Patent 10,937,590
Status Granted
Inventor Jitaru, Ionel
Application 16/368186
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 28 Mar 2019
Date of Patent 02 Mar 2021

#40

Very High Efficiency Soft Switching Converter AKA the Adjud Converter

Patent 10,742,129
Status Granted
Inventor Jitaru, Ionel
Application 15/627832
Assignee ROMPOWER ENERGY SYSTEMS, INC., Tucson, AZ
Filling Date 20 Jun 2017
Date of Patent 11 Aug 2020

#39

Energy Recovery from the Leakage Inductance of the Transformer

Patent 10,651,748
Status Granted
Inventor Jitaru, Ionel
Application 16/158202
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 11 Oct 2018
Date of Patent 12 May 2020

#38

Self-Adjusting Current Technology

Patent 10,574,148
Status Granted
Inventor Jitaru, Ionel Dan
Application 16/503,432
Assignee Rompower Technology Holdings, LLC
Filling Date 03 Jul 2019
Date of Patent 25 Feb 2020

#37

Multiple Cells Magnetic Structure for Wireless Power

Patent 10,553,351
Status Granted
Inventor Jitaru, Ionel / Radulescu, Andrei Ion / Davila, Marco Antonio / Savu, Andrei
Application 13/887350
Assignee DELTA ELECTRONICS (THAILAND) PUBLIC CO., LTD.
Filling Date 05 May 2013
Date of Patent 04 Feb 2020

#36

Magnetic Structures For Low Leakage Inductance and Very High Efficiency (Taiwan)

Patent TWI663611
Status Granted
Inventor Jitaru, Ionel Dan
Application TW107116936
Filling Date 19 Mar 2015
Date of Patent 21 Jun 2019

#35

Phase-Shifted Full-Bridge Topology with Current Injection

Patent 10,291,140
Status Granted
Inventor Jitaru, Ionel
Application 15/987499
Assignee ROMPOWER ENERGY SYSTEMS, INC., Tucson, AZ
Filling Date 23 May 2018
Date of Patent 14 May 2019

#34

Very High Efficiency One Stage Isolated Power Factor Correction Circuit

Patent 10,205,398
Status Granted
Inventor Jitaru, Ionel
Application 15/463856
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 20 Mar 2017
Date of Patent 12 Feb 2019

#33

Soft Switching on All Switching Elements Converter Through Current Shaping “Bucharest Converter”

Patent 10,205,397
Status Granted
Inventor Jitaru, Ionel
Application 14/796204
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 10 Jul 2015
Date of Patent 12 Feb 2019

#32

Ideal Switch Bridgeless PFC

Patent 10,186,955
Status Granted
Inventor Jitaru, Ionel / Davila, Marco Antonio / Tamas, Cosmin Andrei
Application 15/284207
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 03 Oct 2016
Date of Patent 22 Jan 2019

#31

Method and Apparatus for Load Identification

Patent 10,146,281
Status Granted
Inventor Jitaru, Ionel / Bucheru, Bogdan Tudor / Davila, Marco
Application 13/199477
Assignee DELTA ELECTRONICS THAILAND PUBLIC COMPANY LIMITED
Filling Date 31 Aug 2011
Date of Patent 04 Dec 2018

#30

Soft Switching Converter by Steering the Magnetizing Current

Patent 10,103,639
Status Granted
Inventor Jitaru, Ionel / Davila, Marco Antonio
Application 14/274701
Assignee ROMPOWER ENERGY SYSTEMS, INC., Tucson, AZ
Filling Date 10 May 2014
Date of Patent 16 Oct 2018

#29

True Soft Switching by Timed Steering of a Current Source

Patent 10,050,545
Status Granted
Inventor Jitaru, Ionel
Application 15/899243
Assignee ROMPOWER ENERGY SYSTEMS, INC., Tucson, AZ
Filling Date 19 Feb 2018
Date of Patent 14 Aug 2018

#28

Method and Apparatus for Obtaining Soft Switching in all the Switching Elements Through Current Shaping and Intelligent Control

Patent 9,985,546
Status Granted
Inventor Jitaru, Ionel Dan
Application 15/068,598
Assignee ROMPOWER TECHNOLOGY HOLDINGS, LLC (Milford, DE)
Filling Date 13 Mar 2016
Date of Patent 29 May 2018

#27

Soft Transition on All Switching Elements Two Transistors Forward Converter

Patent US 9,899,929
Status Granted
Inventor Jitaru, Ionel / Davila, Marco Antonio
Application 14/890088
Assignee Rompower Energy Systems, Inc., Tucson, AZ (US)
Filling Date 12 May 2014
Date of Patent 20 Feb 2018

#26

Magnetic Configuration for High Efficiency Power Processing

Patent 9,196,417
Status Granted
Inventor Jitaru, Ionel Dan / Davila, Marco Antonio / Savu, Andrei / Radulescu, Andrei Ion
Application 13/887346
Assignee DET International Holding Limited (Grand Cayman, KY)
Filling Date 05 May 2013
Date of Patent 24 Nov 2015

#25

High Efficiency Flyback Converter

Patent 7,764,518
Status Granted
Inventor Jitaru, Ionel D.
Application 10/511232
Assignee DET International Holding Limited Grand Cayman (KY)
Filling Date 11 Apr 2003
Date of Patent 27 Jul 2010

#24

DC-DC Switching Converter Device

Patent 7,719,137
Status Granted
Inventor Jitaru, Ionel D. / Bucheru; Bogdan T. / Bucheru; Bogdan T. / Davila, Jr.; Marco A.
Application 10/548393
Assignee DET International Holding Limited Grand Cayman (KY)
Filling Date 10 Mar 2004
Date of Patent 18 May 2010

#23

Method and Apparatus for Controlling Synchronous Rectifier

Patent 7,558,082
Status Granted
Inventor Jitaru, Ionel D.
Application 10/509983
Assignee DET International Holding Limited Grand Cayman (KY)
Filling Date 28 Mar 2003
Date of Patent 07 Jul 2009

#22

Soft Switching High Efficiency Flyback Converter

Patent 7,450,402
Status Granted
Inventor Jitaru, Ionel D.
Application 10/511117
Assignee DET International Holding Limited Grand Cayman (KY)
Filling Date 11 Apr 2003
Date of Patent 11 Nov 2008

#21

Active Snubber

Patent 7,408,793
Status Granted
Inventor Jitaru, Ionel D. / Casaru, George
Application 10/545567
Assignee DET International Holding Limited Grand Cayman (KY)
Filling Date 11 Feb 2003
Date of Patent 05 Aug 2008

#20

Low Profile Magnetic Element

Patent 7,295,094
Status Granted
Inventor Jitaru, Ionel D. / Davila, Marco A.
Application 10/512128
Assignee DET International Holding Limited Grand Cayman (KY)
Filling Date 11 Apr 2003
Date of Patent 13 Nov 2007

#19

Forward Converter with Controlled Reset

Patent 7,012,820
Status Granted
Inventor Jitaru, Ionel D.
Application 10/499850
Assignee DET International Holding Limited (KY)
Filling Date 20 Dec 2002
Date of Patent 14 Mar 2006

#18

Soft Switching Converter Using Current Shaping

Patent 7,009,850
Status Granted
Inventor Jitaru, Ionel D.
Application 10/511114
Assignee DET International Holding Limited Grand Cayman (CY)
Filling Date 11 Apr 2003
Date of Patent 07 Mar 2006

#17

Low Noise Full Integrated Multilayers Magnetic For Power Converters

Patent 6,980,074
Status Granted
Inventor Jitaru, Ionel
Application 09/434985
Assignee Delta Energy Systems (Switzerland) AG (Bern-Bumplitz, CH)
Filling Date 05 Nov 1999
Date of Patent 27 Dec 2005

#16

Planar Inductive Element

Patent 6,967,553
Status Granted
Inventor Jitaru, Ionel
Application 10/381161
Assignee Delta Energy Systems (Switzerland) AG (CH)
Filling Date 11 Aug 2003
Date of Patent 22 Nov 2005

#15

Soft Transition Converter

Patent 6,862,195
Status Granted
Inventor Jitaru, Ionel
Application 09/260478
Assignee Delta Energy Systems (Switzerland) AG (CH)
Filling Date 01 Mar 1999
Date of Patent 01 Mar 2005

#14

Modularized Power Supply

Patent 6,731,523
Status Granted
Inventor Jitaru, Ionel
Application 09/737500
Assignee Ascom Energy Systems, AG (Berne, CH)
Filling Date 13 Dec 2000
Date of Patent 04 May 2004

#13

Method And Apparatus For Forming A Magnetic Component On A Printed Circuit Board

Patent 6,489,876
Status Granted
Inventor Jitaru, Ionel
Application 09/668620
Assignee Ascom Energy Systems, AG (Berne, CH)
Filling Date 22 Sep 2000
Date of Patent 03 Dec 2002

#12

Flux Equalized Transformer Circuit

Patent 6,469,486
Status Granted
Inventor Jitaru, Ionel
Application 09/542068
Assignee Ascom Energy Systems, AG (Berne, CH)
Filling Date 03 Apr 2000
Date of Patent 22 Oct 2002

#11

Component Transformer

Patent 6,466,454
Status Granted
Inventor Jitaru, Ionel
Application 09/313939
Assignee Ascom Energy Systems, AG (Berne, CH)
Filling Date 18 May 1999
Date of Patent 15 Oct 2002

#10

Method And Apparatus For Transmitting A Signal Through A Power Magnetic Structure

Patent 6,414,578
Status Granted
Inventor Jitaru, Ionel
Application 09/740314
Assignee Ascom Energy Systems, AG (Berne, CH)
Filling Date 18 Dec 2000
Date of Patent 02 Jul 2002

#9

Transformer Providing Low Output Voltage

Patent 6,400,249
Status Granted
Inventor Jitaru, Ionel
Application 09/740315
Assignee Ascom Energy Systems, AG (Berne, CH)
Filling Date 18 Dec 2000
Date of Patent 04 Jun 2002

#8

Current Sensor

Patent 6,380,727
Status Granted
Inventor Jitaru, Ionel
Application 09/113794
Assignee Ascom Energy Systems AG (Berne, CH)
Filling Date 03 Jul 1998
Date of Patent 30 Apr 2002

#7

High Power Planar Transformer

Patent 6,211,767
Status Granted
Inventor Jitaru, Ionel
Application 09/316924
Assignee Rompower ( Tucson , AZ )
Filling Date 21 May 1999
Date of Patent 03 Apr 2001

#6

Flux Equalized Transformer Circuit

Patent 6,046,918
Status Granted
Inventor Jitaru, Ionel
Application 09/310626
Assignee Rompower ( Tucson , AZ )
Filling Date 12 May 1999
Date of Patent 04 Apr 2000

#5

Low Noise Full Integrated Multilayers Magnetic For Power Converters

Patent 5,990,776
Status Granted
Inventor Jitaru, Ionel
Application 08/351943
Filling Date 08 Dec 1994
Date of Patent 23 Nov 1999

#4

Packaging Power Converters

Patent 5,973,923
Status Granted
Inventor Jitaru, Ionel
Application 09/086365
Filling Date 28 May 1998
Date of Patent 26 Oct 1999

#3

Fixed Frequency Converter Switching At Zero Voltage

Patent 5,434,768
Status Granted
Inventor Jitaru, Ionel / Beldianu, Vasile
Application 08/016885
Assignee Rompower ( Tucson , AZ )
Filling Date 12 Feb 1993
Date of Patent 18 Jul 1995

#2

Square Wave Converter Having An Improved Zero Voltage Switching Operation

Patent 5,231,931
Status Granted
Inventor Jitaru, Ionel
Application 07/868924
Assignee ITT Corp. ( Secaucus , NJ )
Filling Date 15 Apr 1992
Date of Patent 27 Jul 1993

#1

Fixed Frequency Single Ended Forward Converter Switching At Zero Voltage

Patent 5,126,931
Status Granted
Inventor Jitaru, Ionel
Application 07/579,470
Assignee ITT Corp. (New York, NY)
Filling Date 07 Sep 1990
Date of Patent 30 Jun 1992

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