Inventor

Nobuyoshi Mutoh

Inventor

Katsuta, JP

Overview

29→

Patents

1985–2008

Patent span

Electricity

Primary field (CPC H)

Patents· 29 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 systems18%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters18%

B60LPropulsion of electrically-propelled vehicles15%

Y02TClimate change mitigation technologies related to transportation13%

G11BInformation storage based on relative movement between record carrier and transducer7%

H02KDynamo-electric machines5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

B60YIndexing scheme relating to aspects cross-cutting vehicle technology3%

H02JElectric power networks3%

H03KPulse technique3%

PatentTitleYear

7,342,799'System using power converter, microsurge suppressor and microsurge suppression method'2008 7,042,198'System using a power converter'2006 6,999,330'Power converter and system using the same'2006 5,677,604'Control system and control method for electric automobile'1997 5,650,700'Electric vehicle torque controller'1997 5,583,406'Control method and system for regeneration braking of an electric vehicle'1996 5,557,181'Brake control apparatus for electric motor vehicle'1996 5,549,172'Electric vehicle drive system and drive method'1996 5,534,764'Vehicle driving control system having function for suppressing vibration'1996 5,532,571'Control apparatus for induction motor'1996 5,481,168'Electric vehicle torque controller'1996 5,453,972'Optical disk apparatus'1995 5,432,644'Disk drive unit having motor components in a compact arrangement'1995 5,414,339'Electric vehicle control system'1995 5,357,181'Failure detection method for electric vehicles and fail-safe control method using this method'1994 5,298,841'Apparatus for controlling the speed of a moving object'1994 5,245,232'Linear actuator'1993 5,210,479'Drive circuit for an insulated gate transistor having overcurrent detecting and adjusting circuits'1993 5,184,057'Control method and device for AC motor'1993 5,175,479'Moving body position control apparatus and signal reproducing apparatus'1992 5,053,690'Control method of pulse width modulation inverter and pulse width modulation inverter system'1991 5,023,538'PWM inverter apparatus for controlling rotating magnetic flux in a.c. motors'1991 5,019,773'Method and apparatus for detecting positions and/or speed of a moving body using two phase signals'1991 4,965,504'Control apparatus for inverter for driving AC motor'1990 4,779,183'Method and apparatus for selectively controlling an operation mode of a PWM inverter between an asychronous mode and a synchronous mode modulation'1988 4,767,976'Control system for PWM inverter'1988 4,688,162'Rectifier control apparatus with improved power factor'1987 4,599,549'Method and apparatus for controlling PWM inverters'1986 4,562,524'Control apparatus for PWM inverter'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1997Patents assigned to HITACHI LTD (26)· patent assignee history

1985–1987Based in Hitachi, JP· patent location history

1988–1997Based in Katsuta, JP· patent location history

1995Patents assigned to JAPAN SERVO (1)· patent assignee history

1995Based in Ibaraki-shi, JP· patent location history

1996Based in Hitachinaka, JP· patent location history

2006–2008Patents assigned to UNIV KEIO (2)· patent assignee history

2006Patents assigned to JAPAN SOC PROMOTION MACH IND (1)· patent assignee history

2006–2008Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	26	1985–1997
UNIV KEIO	2	2006–2008
JAPAN SERVO	1	1995
JAPAN SOC PROMOTION MACH IND	1	2006

Locations

Location	Patents	Span
Katsuta, JP	20	1988–1997
Tokyo, JP	3	2006–2008
Hitachi, JP	3	1985–1987
Hitachinaka, JP	2	1996
Ibaraki-shi, JP	1	1995