Inventor
Robert S. Wrathall
Inventor
Scotts Valley, CA, US
Overview
Patents· 38 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G05Fprimary
G05FSystems for regulating electric or magnetic variables26%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems20%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications14%
G01RMeasuring electric variables7%
H03KPulse technique7%
H10DInorganic electric semiconductor devices6%
Y02PClimate change mitigation technologies in the production or processing of goods4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
G11CStatic stores3%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h103%
PatentTitleYear
10,998,815Electrical circuits for power factor correction by measurement and removal of overtones20219,397,570'Systems for controlling high frequency voltage mode switching regulators'20169,350,236'Switching regulator with reduced body diode conduction'20168,896,281'Method for generating an internal compensation network of a pole and two zeros to compensate high frequency voltage mode switching regulators'20148,803,494'Method for reducing body diode conduction in NMOS synchronous rectifiers'20148,619,442'Boost-buck power factor correction'20138,542,503'Systems and methods for high speed power factor correction'20138,482,270'Reverse current comparator for switching regulators'20138,354,831'Reverse current comparator circuit and method for switching regulators'20138,018,744'Power factor correction by measurement and removal of overtones'20117,719,862'Power factor correction by measurement and removal of overtones'20106,809,560'Load sensing circuit for a power MOSFET switch'20046,737,841'Amplifier circuit for adding a laplace transform zero in a linear integrated circuit'20046,724,257'Error amplifier circuit'20046,424,132'Adding a laplace transform zero to a linear integrated circuit for frequency stability'20026,395,591'Selective substrate implant process for decoupling analog and digital grounds'20026,307,409'Gate driver circuit for high and low side switches with primary and secondary shoot-through protection'20016,304,067'Adding a laplace transform zero to a linear integrated circuit for frequency stability'20016,005,378'Compact low dropout voltage regulator using enhancement and depletion mode MOS transistors'19996,002,244'Temperature monitoring circuit with thermal hysteresis'19995,929,615'Step-up/step-down voltage regulator using an MOS synchronous rectifier'19995,889,393'Voltage regulator having error and transconductance amplifiers to define multiple poles'19995,867,014'Current sense circuit having multiple pilot and reference transistors'19995,596,265'Band gap voltage compensation circuit'19975,559,424'Voltage regulator having improved stability'19965,506,496'Output control circuit for a voltage regulator'19965,164,802'Power VDMOSFET with schottky on lightly doped drain of lateral driver FET'19924,820,968'Compensated current sensing circuit'19894,795,716'Method of making a power IC structure with enhancement and/or CMOS logic'19894,725,912'Power MOS loss of ground protection'19884,701,883'ECL/CMOS memory cell with separate read and write bit lines'19874,701,718'CMOS high gain amplifier utilizing positive feedback'19874,605,891'Safe operating area circuit and method for an output switching device'19864,553,084'Current sensing circuit'19854,453,095'ECL MOS Buffer circuits'19844,380,706'Voltage reference circuit'19834,319,181'Solid state current sensing circuit'19824,231,332'Spark and dwell ignition control system using digital circuitry'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1988Patents assigned to MOTOROLA INC (9)· patent assignee history
1980–1988Based in Tempe, AZ, US· patent location history
1989–1992Based in Durham, NC, US· patent location history
1996–2021Based in Scotts Valley, CA, US· patent location history
1999Patents assigned to IMPALA LINEAR CORP (5)· patent assignee history
2001–2004Patents assigned to MICREL INC (7)· patent assignee history
2010–2021Patents assigned to WRATHALL ROBERT S (4)· patent assignee history
2013–2016Patents assigned to ADVANCED ANALOGIC TECH INC (6)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MOTOROLA INC | 9 | 1980–1988 |
| MICREL INC | 7 | 2001–2004 |
| ADVANCED ANALOGIC TECH INC | 6 | 2013–2016 |
| IMPALA LINEAR CORP | 5 | 1999 |
| WRATHALL ROBERT Sself | 4 | 2010–2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Scotts Valley, California, US | 26 | 1996–2021 |
| Tempe, AZ, US | 9 | 1980–1988 |
| Durham, NC, US | 3 | 1989–1992 |