Inventor

Thaddeus Schroeder

Inventor

Rochester Hills, MI, US

Overview

1976–2020

Patent span

Physics

Primary field (CPC G)

Patents· 106 as inventor

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

G01Dprimary

G01DMeasuring not specially adapted for a specific variable25%

G01PMeasuring linear or angular speed, acceleration, deceleration, or shock13%

Y10TTechnical subjects covered by former us classification9%

G01RMeasuring electric variables5%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure5%

G01BMeasuring length, thickness or similar linear dimensions4%

H01FMagnets3%

H10NElectric solid-state devices not otherwise provided for3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

F02DControlling combustion engines2%

PatentTitleYear

10,718,637Torque and angular sensor2020 7,523,671'Apparatus, system and method for measuring stress'2009 7,454,978'Versatile strain sensor employing magnetostrictive electrical conductors'2008 7,362,096'Robust detection of strain with temperature correction'2008 7,234,361'Magnetostrictive strain sensor (airgap control)'2007 7,229,746'Printed high strength permanent magnet targets for magnetic sensors'2007 7,221,151'Magnetic array position sensor'2007 7,210,360'Apparatus for sensing position and/or torque'2007 7,205,759'Apparatus and method for determining an engine speed'2007 7,153,070'Drill bit guide for a hand-held drill'2006 7,106,233'Integrated galvanomagnetic sensor array system'2006 7,071,682'Magnetic array position sensor and method'2006 7,062,840'Method for forming permanent magnet targets for position sensors'2006 7,050,917'Method for selectively reconfiguring a sensor according to applicable sensing requirements and reconfigurable sensor'2006 7,021,127'Self-powered wireless sensor assembly for sensing angular position of the engine crankshaft in a vehicle'2006 7,011,326'Piezoresistive torque sensor'2006 7,009,384'Sensor assembly combining signals with enhanced asymmetry for detecting direction of rotation of an object'2006 6,993,983'Universal magnetostrictive force sensor'2006 6,992,480'Combined incremental and linear magnetic sensor'2006 6,992,479'Magnetic sensor array configuration for measuring a position and method of operating same'2006 6,985,066'Controlled electron mobility galvanomagnetic devices'2006 6,941,824'Magnetic force sensor and control circuit for same'2005 6,911,830'Diesel engine lubricating oil contaminant sensor method'2005 6,894,486'Magnetic encoder with double Frequency output'2005 6,873,151'Sensor assembly for sensing angular position'2005 6,786,084'Sensor assembly and method for non-intrusively sensing instantaneous speed of the engine of a vehicle'2004 6,786,468'Unibody valve and techniques for making same for a purge control device'2004 6,776,058'Digital magneto-sensitive torque sensor'2004 6,720,763'Compact rotary magnetic position sensor having a sinusoidally varying output'2004 6,650,110'Target wheel sensor assembly for producing an asymmetric signal and for determining the direction of motion of the target wheel based on the signal shape'2003 6,639,399'Target wheel sensor assembly for determining position and direction of motion of a rotating target wheel'2003 6,636,036'Sensor with signal amplitude adaptive hysteresis'2003 6,630,882'Composite magnetic sensor'2003 6,614,223'Analog angle encoder having a single piece magnet assembly surrounding an air gap'2003 6,577,123'Linear position sensor assembly'2003 6,566,867'Binary encoded crankshaft target wheel with single VR sensor'2003 6,538,429'Angular position sensor assembly for a motor vehicle generator shaft'2003 6,512,369'Temperature compensated voltage divider with a magnetoresistor and a reference resistor'2003 6,498,482'Magnetoresistor die composed of two reference mangetoresistors and a linear displacement sensing magnetoresistor'2002 6,489,761'Magnetic arrangement for an analog angle encoder'2002 6,486,657'Malfunction detector for magnetoresistor speed and position sensors'2002 6,486,659'Magnetoresistor sensor die with an array of MRs'2002 6,486,656'Magnetoresistive die and position sensor'2002 6,469,497'Magnetic position sensor system composed of two reference magnetoresistors and a linear displacement sensing magnetoresistor'2002 6,453,732'Side-mount bracket system for providing a locked sensor position'2002 6,400,142'Steering wheel position sensor'2002 6,346,808'Crankshaft position sensor'2002 6,338,190'Method for automatically setting an air gap'2002 6,326,782'Two dimensional magnetoresistive position sensor'2001 6,320,374'Angular position and angular direction sensor'2001 6,310,474'Method and apparatus for detecting the direction of crankshaft rotation during a single tooth/slot transition'2001 6,291,989'Differential magnetic position sensor with adaptive matching for detecting angular position of a toothed target wheel'2001 6,272,747'Method of using horizontal mount bracket system for automatically setting an air gap'2001 6,271,662'Method of matching sensors to crankshafts and camshafts'2001 6,268,721'Low cost binary encoded crankshaft position sensor'2001 6,232,770'Low cost single magnetoresistor position and speed sensor'2001 6,208,176'Adaptive driver circuit for semiconductor magnetoresistors'2001 6,201,466'Magnetoresistor array'2001 6,181,128'Magnetic beam flow sensor'2001 6,176,636'Two-component bracket and drive washer combination for automatically setting an air gap'2001 6,139,211'Horizontal-mount bracket system for automatically setting an air gap'2000 6,123,301'Horizontal-mount bracket system for holding and locking sensor position'2000 6,100,682'Three-element angular position sensor'2000 6,070,865'Air gap presetting sensor holder'2000 6,062,529'Horizontal mount air gap presetting sensor bracket'2000 5,951,191'Washer and bracket combination for automatically setting an air gap'1999 5,916,459'Method of matching magnetoresistors in a sensor assembly'1999 5,754,042'Magnetoresistive encoder for tracking the angular position of a rotating ferromagnetic target wheel'1998 5,738,345'Device for generating a fixture'1998 5,731,702'High accuracy angle based rotation sensor with time based back up'1998 5,714,883'Rotational sensor including axially adjacent targets one of which having invariant permeability the other having varying permeability as they rotate'1998 5,668,471'Rotational sensor with robust axial alignment tolerance'1997 5,631,093'Magnetically coded device'1997 5,598,814'Method and apparatus for electrically driving engine valves'1997 5,570,016'Method and apparatus for detecting crankshaft angular position'1996 5,568,048'Three sensor rotational position and displacement detection apparatus with common mode noise rejection'1996 5,513,972'Surface generating device suitable for generating a die, mold or fixture surface'1996 5,508,611'Ultrathin magnetoresistive sensor package'1996 5,494,007'Method and apparatus for electrically driving engine valves'1996 5,492,572'Method for thermomagnetic encoding of permanent magnet materials'1996 5,492,571'Thermomagnetic encoding method and articles'1996 5,491,633'Position sensor for electromechanical suspension'1996 5,404,102'Method and apparatus for electrically exciting a magneto-resistor device'1995 5,327,856'Method and apparatus for electrically driving engine valves'1994 5,315,245'Sensor assembly having embedded wires within a powder metal core and a method therefor'1994 5,291,133'Multi-bit encoder signal conditioning circuit having common mode disturbance compensation'1994 5,283,130'Thermomagnetically patterned magnets and method of making same'1994 5,216,405'Package for the magnetic field sensitive device'1993 5,210,493'Method for embedding wires within a powder metal core and sensor assembly produced by such a method'1993 5,132,909'Apparatus for diagnosing individual cylinder performance by estimated instantaneous engine speeds'1992 5,091,021'Magnetically coded device and method of manufacture'1992 5,089,060'Thermomagnetically patterned magnets and method of making same'1992 5,074,929'Method of making a permanent magnet sensor element with a soft magnetic layer'1991 5,065,130'High sensitivity corbino disk magnetoresistor array'1991 4,953,407'Ion-drag flowmeter'1990 4,926,122'High sensitivity magnetic circuit'1990 4,924,696'Noncontacting position sensor for an automotive steering system'1990 4,742,332'Magnetic shaft angle encoder'1988 4,667,510'Method and apparatus for locating top dead center position of a piston of an internal combustion engine'1987 4,539,841'Method of determining engine cylinder compression pressure and power output'1985 4,520,658'Method of locating engine top dead center position'1985 4,230,918'Vehicle window glass breakage detector'1980 4,195,673'Fuel tank fill tube with a magnetically actuated valve'1980 4,148,372'Resistor coded theft deterrent system'1979 4,075,592'Electrical load outage detector'1978 3,950,741'Accessory outage monitoring circuitry'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2001Patents assigned to GEN MOTORS CORP (45)· patent assignee history

1976–1987Based in Sterling Heights, MI, US· patent location history

1988–2020Based in Rochester Hills, MI, US· patent location history

1993Patents assigned to DELCO ELECTRONICS CORP (1)· patent assignee history

1998Patents assigned to HUGHES AIRCRAFT CO (1)· patent assignee history

2000–2009Patents assigned to DELPHI TECH INC (58)· patent assignee history

2001Based in Rochester, MI, US· patent location history

2020Patents assigned to CHINA AUTOMOTIVE SYSTEMS INC (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DELPHI TECH INC	58	2000–2009
GEN MOTORS CORP	45	1976–2001
CHINA AUTOMOTIVE SYSTEMS INC	1	2020
DELCO ELECTRONICS CORP	1	1993
HUGHES AIRCRAFT CO	1	1998

Locations

Location	Patents	Span
Rochester Hills, MI, US	97	1988–2020
Sterling Heights, MI, US	8	1976–1987
Rochester, MI, US	1	2001