Inventor

Jih-Sheng Lai

Inventor

Blacksburg, VA, US

Overview

24→

Patents

1991–2016

Patent span

Electricity

Primary field (CPC H)

Patents· 24 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 systems37%

H02JElectric power networks15%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications13%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%

H03KPulse technique8%

H05BElectric heating4%

Y02PClimate change mitigation technologies in the production or processing of goods4%

B23KSoldering or unsoldering2%

H01HElectric switches2%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy2%

PatentTitleYear

9,356,526'DC-DC power conversion apparatus and method'2016 8,830,711'Hybrid switch for resonant power converters'2014 8,824,174'Control system and method for a universal power conditioning system'2014 8,334,616'Photovoltaic integrated variable frequency drive'2012 7,969,225'Circuit of reducing power loss of switching device'2011 7,518,886'Multiphase soft switched DC/DC converter and active control technique for fuel cell ripple current elimination'2009 7,405,910'Multifunction hybrid solid-state switchgear'2008 7,336,004'Topologies for using multiple energy sources for power conversions'2008 7,254,043'Power converter for fuel battery'2007 7,138,730'Topologies for multiple energy sources'2006 7,050,311'Multilevel converter based intelligent universal transformer'2006 6,954,366'Multifunction hybrid intelligent universal transformer'2005 6,876,556'Accelerated commutation for passive clamp isolated boost converters'2005 6,727,482'Apparatus and method for inductive heating'2004 6,452,815'Accelerated commutation for passive clamp isolated boost converters'2002 RE037126'Multilevel cascade voltage source inverter with seperate DC sources'2001 5,710,698'Delta connected resonant snubber circuit'1998 5,644,483'Voltage balanced multilevel voltage source converter system'1997 5,642,273'Resonant snubber inverter'1997 5,642,275'Multilevel cascade voltage source inverter with seperate DC sources'1997 5,426,350'High frequency transformerless electronics ballast using double inductor-capacitor resonant power conversion for gas discharge lamps'1995 5,406,051'Welding machine with a high frequency converter'1995 5,111,374'High frequency quasi-resonant DC voltage notching scheme of a PWM voltage fed inverter for AC motor drives'1992 4,998,054'Programmable current initilization for resonant DC link converter'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1998Based in Knoxville, TN, US· patent location history

1995–2012Patents assigned to ELECTRIC POWER RES INST (6)· patent assignee history

1997–2001Patents assigned to LOCKHEED MARTIN ENERGY SYS INC (3)· patent assignee history

2001–2016Based in Blacksburg, VA, US· patent location history

2005–2014Patents assigned to VIRGINIA TECH INTELL PROP (6)· patent assignee history

2007Based in Taipei, TW· patent location history

2011Patents assigned to ATOMIC ENERGY COUNCIL (1)· patent assignee history

2012–2014Patents assigned to LAI JIH-SHENG (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ELECTRIC POWER RES INST	6	1995–2012
VIRGINIA TECH INTELL PROP	6	2005–2014
LAI JIH-SHENGself	3	2012–2014
LOCKHEED MARTIN ENERGY SYS INC	3	1997–2001
ATOMIC ENERGY COUNCIL	1	2011

Locations

Location	Patents	Span
Blacksburg, Virginia, US	15	2001–2016
Knoxville, TN, US	8	1991–1998
Taipei, TW	1	2007