Inventor

Syooichi Kawamata

Inventor

Hitachi, JP

Overview

17→

Patents

1986–1996

Patent span

Physics

Primary field (CPC G)

Patents· 17 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 variable28%

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

H02KDynamo-electric machines9%

H03MCoding9%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure6%

G01RMeasuring electric variables6%

G11BInformation storage based on relative movement between record carrier and transducer6%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters6%

B60GVehicle suspension arrangements3%

B62DMotor vehicles3%

PatentTitleYear

5,561,366'Current sensor system and detection method comprising magetoresistance element, biasing conductor and current measurement conductor on insulating substrate'1996 5,453,972'Optical disk apparatus'1995 5,351,027'Magnetic sensor'1994 RE034443'Apparatus magnetically detecting position or speed of moving body utilizing bridge circuit with series connected MR elements'1993 5,245,232'Linear actuator'1993 5,218,279'Method and apparatus for detection of physical quantities, servomotor system utilizing the method and apparatus and power steering apparatus using the servomotor system'1993 5,019,776'Magnetic position detection apparatus having two magnetic recording medium tracks with magnetoresistors arranged in a bridge circuit so as to eliminate even order harmonic distortion'1991 4,983,893'Actuator with stepping motion function'1991 4,939,435'Torque detecting apparatus'1990 4,904,937'Apparatus for magnetically detecting positions with minimum length magnetic information units recorded on a plurality of magnetic tracks'1990 4,874,053'Torque detecting apparatus'1989 4,818,939'Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements'1989 4,786,870'Magnetic sensor for magnetically detecting the position of a movable body'1988 4,713,613'Device for magnetically detecting displacement of non-magnetic movable member'1987 4,707,695'Magnetic position sensor'1987 4,694,688'Crank angle sensor'1987 4,594,548'Multi phase magnetic sensor apparatus for detecting the position of moving member'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1996Patents assigned to HITACHI LTD (16)· patent assignee history

1986–1996Based in Hitachi, JP· patent location history

1990Patents assigned to KAWAMATA SYOOICHI (1)· patent assignee history

1990Patents assigned to KURIYAMA SHIGERU (1)· patent assignee history

1990Patents assigned to MASAKI RYOOSOO (1)· patent assignee history

1990Patents assigned to MIYASHITA KUNIO (1)· patent assignee history

1990Based in Ibaraki-shi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	16	1986–1996
KAWAMATA SYOOICHIself	1	1990
KURIYAMA SHIGERU	1	1990
MASAKI RYOOSOO	1	1990
MIYASHITA KUNIO	1	1990

Locations

Location	Patents	Span
Hitachi, JP	16	1986–1996
Ibaraki-shi, JP	1	1990