Inventor

Hsueh-Rong Chang

Inventor

Scotia, NY, US

Overview

30→

Patents

1989–2015

Patent span

Electricity

Primary field (CPC H)

Patents· 30 as inventor

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

H10Dprimary

H10DInorganic electric semiconductor devices57%

H01JElectric discharge tubes or discharge lamps15%

H01RElectrically-conductive connections5%

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 systems5%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h105%

B01DSeparation3%

B09CReclamation of contaminated soil3%

H01LSemiconductor devices3%

H03KPulse technique3%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h103%

PatentTitleYear

9,118,126'Power semiconductor package with conductive clip'2015 8,354,733'IGBT power semiconductor package having a conductive clip'2013 7,476,932'U-shape metal-oxide-semiconductor (UMOS) gate structure for high power MOS-based semiconductor devices'2009 7,173,290'Thyristor switch with turn-off current shunt, and operating method'2007 7,135,740'High voltage FET switch with conductivity modulation'2006 6,965,131'Thyristor switch with turn-off current shunt, and operating method'2005 6,906,356'High voltage switch'2005 6,399,998'High voltage insulated-gate bipolar switch'2002 6,392,273'Trench insulated-gate bipolar transistor with improved safe-operating-area'2002 6,380,569'High power unipolar FET switch'2002 6,252,288'High power trench-based rectifier with improved reverse breakdown characteristic'2001 6,252,258'High power rectifier'2001 5,866,983'Protective metal silicate coating for electrodeless HID lamps'1999 5,438,244'Use of silver and nickel silicide to control iodine level in electrodeless high intensity discharge lamps'1995 5,434,482'Electrodeless fluorescent lamp with optimized amalgam positioning'1995 5,412,289'Using a magnetic field to locate an amalgam in an electrodeless fluorescent lamp'1995 5,343,118'Iodine getter for a high intensity metal halide discharge lamp'1994 5,270,615'Multi-layer oxide coating for high intensity metal halide discharge lamps'1993 5,240,570'Surfactant augmented in-situ removal of PCBs from soil by electroosmosis'1993 5,111,253'Multicellular FET having a Schottky diode merged therewith'1992 4,994,871'Insulated gate bipolar transistor with improved latch-up current level and safe operating area'1991 4,994,883'Field controlled diode (FCD) having MOS trench gates'1991 4,992,390'Trench gate structure with thick bottom oxide'1991 4,982,260'Power rectifier with trenches'1991 4,963,950'Metal oxide semiconductor gated turn-off thyristor having an interleaved structure'1990 4,961,100'Bidirectional field effect semiconductor device and circuit'1990 4,942,445'Lateral depletion mode tyristor'1990 4,903,189'Low noise, high frequency synchronous rectifier'1990 4,823,176'Vertical double diffused metal oxide semiconductor (VDMOS) device including high voltage junction exhibiting increased safe operating area'1989 4,801,986'Vertical double diffused metal oxide semiconductor VDMOS device with increased safe operating area and method'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1999Patents assigned to GEN ELECTRIC (18)· patent assignee history

1989–1995Based in Scotia, NY, US· patent location history

1995–1999Based in Schenectady, NY, US· patent location history

2001–2002Patents assigned to ROCKWELL SCIENCE CENTER LLC (4)· patent assignee history

2001–2007Based in Thousand Oaks, CA, US· patent location history

2005Patents assigned to ROCKWELL SCIENT LICENSING LLC (2)· patent assignee history

2006–2007Patents assigned to TELEDYNE LICENSING LLC (2)· patent assignee history

2009Based in Los Angeles, CA, US· patent location history

2013–2015Patents assigned to INT RECTIFIER CORP (2)· patent assignee history

2013–2015Based in Hermosa Beach, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GEN ELECTRIC	18	1989–1999
ROCKWELL SCIENCE CENTER LLC	4	2001–2002
INT RECTIFIER CORP	2	2013–2015
ROCKWELL SCIENT LICENSING LLC	2	2005
TELEDYNE LICENSING LLC	2	2006–2007

Locations

Location	Patents	Span
Scotia, New York, US	15	1989–1995
Thousand Oaks, California, US	9	2001–2007
Schenectady, New York, US	3	1995–1999
Hermosa Beach, California, US	2	2013–2015
Los Angeles, California, US	1	2009