Inventor

Toshio Kumamoto

Inventor

Tokyo, JP

Overview

1987–2016

Patent span

Electricity

Primary field (CPC H)

Patents· 62 as inventor

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

H03Mprimary

H03MCoding39%

H10DInorganic electric semiconductor devices16%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1013%

H03KPulse technique11%

H03FAmplifiers8%

G06GAnalogue computers3%

G11CStatic stores3%

H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner3%

H10NElectric solid-state devices not otherwise provided for3%

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

PatentTitleYear

9,473,088'Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier'2016 9,166,541'Signal processing circuit, resolver digital converter, and multipath nested mirror amplifier'2015 9,118,341'Delta-sigma A/D converter'2015 8,330,199'Semiconductor device having resistors with a biased substrate voltage'2012 8,237,282'Semiconductor device'2012 8,223,050'Delta-sigma A/D converter'2012 8,188,526'Semiconductor device'2012 8,089,136'Semiconductor device'2012 7,952,506'Î”Î£-type A/D converter'2011 7,915,708'Semiconductor device'2011 7,868,413'Semiconductor device'2011 7,847,714'Î”Î£-type A/D converter'2010 7,821,078'Semiconductor device having resistor elements and method for manufacturing the same'2010 7,710,304'A/D converter and semiconductor device'2010 7,557,427'Semiconductor device'2009 7,446,390'Semiconductor device'2008 7,362,194'Oscillator circuit and L load differential circuit achieving a wide oscillation frequency range and low phase noise characteristics'2008 7,276,776'Semiconductor device'2007 7,202,754'Oscillator circuit and L load differential circuit achieving a wide oscillation frequency range and low phase noise characteristics'2007 7,045,865'Semiconductor device with resistor elements formed on insulating film'2006 7,009,539'Modulator providing only quantization error component to delta sigma modulator'2006 6,809,582'Semiconductor device including a differential transistor pair'2004 6,784,548'Semiconductor device having dummy patterns for metal CMP'2004 6,734,814'Modulator'2004 6,734,816'D/A converter with high jitter resistance'2004 6,703,957'Digital-to-analog converter'2004 6,573,588'Capacitance element'2003 6,538,589'Digital modulator and D/A converter using the modulator'2003 6,522,007'Semiconductor device having dummy patterns for metal CMP'2003 6,323,794'.DELTA..SIGMA. modulator, DA converter and AD converter'2001 6,300,890'Delta-sigma modulator and AD converter'2001 6,232,804'Sample hold circuit having a switch'2001 6,069,579'Folding type A/D converter and folding type A/D converter circuit'2000 5,995,031'D/A and A/D converters'1999 5,966,088'Analog/digital converter and voltage comparator capable of fast producing of output offset voltage'1999 5,936,434'Voltage comparator and A/D converter'1999 5,821,893'Pipeline type A/D converter'1998 5,731,776'Analog-to-digital converter'1998 5,696,511'Voltage comparator and pipeline type A/D converter'1997 5,629,700'Pipeline type analog to digital converter including plural series connected analog to digital converter stages'1997 5,625,308'Two input-two output differential latch circuit'1997 5,583,502'A-D converter testing circuit and D-A converter testing circuit'1996 5,554,989'A/D converter having folded arrangement of voltage comparator'1996 5,539,406'Series-parallel type A-D converter for realizing high speed operation and low power consumption'1996 5,469,047'Transistor circuit'1995 5,396,131'Differential amplifier, comparator and high-speed A/D converter using the same'1995 5,345,237'Differential amplifier and two-step parallel A/D converter'1994 5,341,037'Sample hold circuit, buffer circuit and sample hold apparatus using these circuits'1994 5,327,134'D-A converter'1994 5,317,312'Analog-to-digital converter of an annular configuration'1994 5,313,207'Differential subtracter improved for higher accuracy and A/D converter including the same'1994 5,283,581'Analog voltage subtracting circuit and an A/D converter having the subtracting circuit'1994 5,196,920'Semiconductor integrated circuit device for limiting capacitive coupling between adjacent circuit blocks'1993 5,148,164'Current generating device for complementarily generating two currents of different magnitudes in response to one-bit data'1992 5,146,201'Magnetic sensor system including stacked hall effect devices detecting orthogonal magnetic fields'1992 5,138,437'Semiconductor integrated circuit device in which integrated circuit units having different functions are stacked in three dimensional manner'1992 5,099,146'Controlled threshold type electric device and comparator employing the same'1992 5,055,820'Hall element and magnetic sensor system employing the same'1991 5,041,884'Multilayer semiconductor integrated circuit'1991 4,900,952'Voltage comparison apparatus'1990 4,827,262'Comparator bank of A/D converter'1989 4,695,748'Comparing device'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2004Patents assigned to MITSUBISHI ELECTRIC CORP (37)· patent assignee history

1987–1996Based in Itami, JP· patent location history

1991–2012Based in Hyogo, JP· patent location history

1997–2016Based in Tokyo, JP· patent location history

2004–2010Patents assigned to RENESAS TECH CORP (10)· patent assignee history

2010–2016Patents assigned to RENESAS ELECTRONICS CORP (13)· patent assignee history

2012–2015Patents assigned to KUMAMOTO TOSHIO (6)· patent assignee history

2012–2015Patents assigned to OKUDA TAKASHI (5)· patent assignee history

2012–2015Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI ELECTRIC CORP	37	1987–2004
RENESAS ELECTRONICS CORP	13	2010–2016
RENESAS TECH CORP	10	2004–2010
KUMAMOTO TOSHIOself	6	2012–2015
OKUDA TAKASHI	5	2012–2015

Locations

Location	Patents	Span
Tokyo, JP	25	1997–2016
Hyogo, JP	25	1991–2012
Itami, JP	9	1987–1996
Kanagawa, JP	3	2012–2015