Inventor

Richard W. Farrington

Inventor

Heath, TX, US

Overview

34→

Patents

1990–2012

Patent span

Electricity

Primary field (CPC H)

Patents· 34 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H02Mprimary

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 systems47%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications33%

Y02PClimate change mitigation technologies in the production or processing of goods9%

H02JElectric power networks3%

H03KPulse technique3%

G01RMeasuring electric variables1%

G05FSystems for regulating electric or magnetic variables1%

H01FMagnets1%

H05KPrinted circuits1%

PatentTitleYear

8,149,597'Intermediate bus architecture with a quasi-regulated bus converter'2012 7,787,261'Intermediate bus architecture with a quasi-regulated bus converter'2010 7,272,021'Power converter with isolated and regulated stages'2007 7,050,309'Power converter with output inductance'2006 6,927,987'Half-bridge isolation stage topologies'2005 6,459,600'Method of connecting synchronous rectifier modules in parallel without output voltage faults'2002 6,307,458'Split inductor with fractional turn of each winding and PCB including same'2001 6,256,214'General self-driven synchronous rectification scheme for synchronous rectifiers having a floating gate'2001 6,201,723'Simplified current share circuit'2001 6,188,586'Asymmetrical half-bridge power converter having reduced input ripple and method of manufacturing the same'2001 6,188,592'Externally-driven scheme for synchronous rectification'2001 6,169,683'Resonant gate drive for synchronous rectifiers'2001 6,166,927'Push-pull power converter circuit'2000 6,060,867'Switch driver for a snubber circuit, method of operation thereof and power converter employing the same'2000 6,038,148'Self-driven synchronous rectification scheme'2000 6,034,513'System and method for controlling power factor and power converter employing the same'2000 6,025,999'Dual output power supply and method of operation thereof'2000 5,991,174'Snubber circuit for a rectifier, method of operation thereof and power converter employing the same'1999 5,991,168'Transient response network, method of diverting energy in a multiple output power converter and a power converter employing the same'1999 5,949,658'Efficiency multiple output DC/DC converter'1999 5,912,549'Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof'1999 5,883,795'Clamp circuit for a power converter and method of operation thereof'1999 5,883,793'Clamp circuit for a power converter and method of operation thereof'1999 5,870,291'Asymmetrical half-bridge converter having adjustable parasitic resistances to offset output voltage DC bias'1999 5,764,037'High efficiency boost topology with two outputs'1998 5,627,455'Boost topology with two outputs for power factor correction application'1997 5,572,416'Isolated input current sense means for high power factor rectifier'1996 5,550,458'Low-loss snubber for a power factor corrected boost converter'1996 5,457,379'High efficiency switch mode regulator'1995 5,450,029'Circuit for estimating a peak or RMS value of a sinusoidal voltage waveform'1995 5,391,976'Power factor control arrangement for an OLS based on quarter cycle averaged power flow'1995 5,325,283'Novel zero-voltage-switching family of isolated converters'1994 5,313,382'Reduced voltage/zero current transition boost power converter'1994 4,931,716'Constant frequency zero-voltage-switching multi-resonant converter'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1994Based in Blacksburg, VA, US· patent location history

1994Patents assigned to AT & T BELL LAB (1)· patent assignee history

1994–1999Based in Mesquite, TX, US· patent location history

1995Patents assigned to AT & T CORP (3)· patent assignee history

1996–2001Patents assigned to LUCENT TECHNOLOGIES INC (15)· patent assignee history

1999–2012Based in Heath, TX, US· patent location history

1999–2001Based in Rockwall, TX, US· patent location history

2000–2002Patents assigned to ERICSSON INC (8)· patent assignee history

2005–2012Patents assigned to SYNQOR INC (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LUCENT TECHNOLOGIES INC	15	1996–2001
ERICSSON INC	8	2000–2002
SYNQOR INC	5	2005–2012
AT & T CORP	3	1995
AT & T BELL LAB	1	1994

Locations

Location	Patents	Span
Heath, Texas, US	20	1999–2012
Mesquite, Texas, US	9	1994–1999
Rockwall, Texas, US	3	1999–2001
Blacksburg, Virginia, US	2	1990–1994