Inventor

Yoshiki Fujioka

Inventor

Hino, JP

Overview

49→

Patents

1980–1995

Patent span

Physics

Primary field (CPC G)

Patents· 49 as inventor

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

G05Bprimary

G05BControl or regulating systems in general22%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters20%

B23QDetails, components, or accessories for machine tools, e.g. arrangements for copying or controlling11%

Y10TTechnical subjects covered by former us classification9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

H05KPrinted circuits5%

G06FElectric digital data processing4%

B23BTurning3%

G01PMeasuring linear or angular speed, acceleration, deceleration, or shock3%

G05DSystems for controlling or regulating non-electric variables3%

PatentTitleYear

5,440,580'Laser discharge tube and electrode manufacturing method'1995 5,379,316'Laser discharge tube'1995 5,153,491'Main spindle control method'1992 5,049,800'Motor output changeover control apparatus'1991 5,012,173'Casing structure for an amplifier unit for an AC spindle'1991 4,975,839'Instruction decode method and arrangement suitable for a decoder of microprocessors'1990 4,945,190'Circuit board device for magnetics circuit and method of manufacturing same'1990 4,928,052'Power supply regenerating circuit'1990 4,908,734'Housing for motor control unit'1990 4,837,491'Motor velocity control apparatus'1989 4,812,975'Emulation method'1989 4,800,327'Three-phase induction motor control method'1989 4,757,248'Induction motor torque control system'1988 4,703,262'Mounting structure for spindle orientation magnetic sensor system'1987 4,677,540'AC motor control panel'1987 4,672,287'Induction motor digital control system'1987 4,651,266'High-frequency noise absorbing circuit'1987 4,641,069'Plural motor changeover control system'1987 4,626,762'AC motor control system'1986 4,614,020'Mechanism and method for automatically changing tools'1986 4,588,937'Position control apparatus'1986 4,581,569'AC motor control apparatus'1986 4,560,927'Speed detecting apparatus'1985 4,558,269'Induction motor drive apparatus'1985 4,501,999'System for stopping spindle at commanded position'1985 4,499,414'AC Motor control method'1985 4,450,393'Spindle orientation control apparatus'1984 4,434,464'Memory protection system for effecting alteration of protection information without intervention of control program'1984 4,403,181'Control system for stopping spindle at predetermined rotational position'1983 4,403,179'Control system for stopping spindle at predetermined rotational position'1983 4,398,138'Spindle orientation control method and apparatus'1983 4,386,305'Drive control system for motors'1983 4,379,987'Spindle rotation control system'1983 4,374,350'Control system for stopping spindle at predetermined rotational position'1983 4,364,005'Brushless tachometer generator'1982 4,362,976'Driving circuit for DC motor'1982 4,359,676'Control system for stopping spindle at predetermined rotational position'1982 4,353,018'Control system for synchronized operation of machine tool motors'1982 4,347,471'Machine tool drive motor control system'1982 4,347,470'Spindle orientation control apparatus'1982 4,345,192'Control system for stopping spindle at predetermined rotational position'1982 4,342,950'Spindle rotation control system'1982 4,330,832'Cutter feed rate control system'1982 4,300,079'DC Motor control system'1981 4,284,932'System for driving DC motor'1981 4,284,939'Device for detecting opposite phase and open phase'1981 4,268,781'DC Motor drive system'1981 4,268,782'Control system for a DC motor'1981 4,207,504'Spindle control system'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1984Patents assigned to FUJITSU FANUC LTD (22)· patent assignee history

1980–1983Based in Hino, JP· patent location history

1983–1990Based in Higashiyamato, JP· patent location history

1984–1990Patents assigned to HITACHI LTD (3)· patent assignee history

1985–1995Patents assigned to FANUC LTD (24)· patent assignee history

1986–1987Based in Yamato, JP· patent location history

1987–1995Based in Tokyo, JP· patent location history

1990–1992Based in Yamanashi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FANUC LTD	24	1985–1995
FUJITSU FANUC LTD	22	1980–1984
HITACHI LTD	3	1984–1990

Locations

Location	Patents	Span
Hino, JP	20	1980–1983
Higashiyamato, JP	14	1983–1990
Yamanashi, JP	5	1990–1992
Yamato, JP	3	1986–1987
Tokyo, JP	2	1987–1995