Inventor

Toshio Ishikawa

Inventor

Nara, JP

Overview

58→

Patents

1976–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 58 as inventor

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

H02Kprimary

H02KDynamo-electric machines16%

G11BInformation storage based on relative movement between record carrier and transducer10%

H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines7%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h107%

G01RMeasuring electric variables6%

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

G02BOptical elements, systems or apparatus4%

LOC144%

H01HElectric switches2%

H01RElectrically-conductive connections2%

PatentTitleYear

10,797,550Rotary electric machine and vehicle provided with the same2020 10,566,873Rotating electrical machine having means to secure plating to cover a flow passage2020 10,320,249Permanent magnet rotating electric machine and method for manufacturing same2019 9,534,321'Monofilament for mowing'2017 9,166,461'Automotive alternator having a heat dissipating plate'2015 9,077,234'Vehicle AC generator'2015 8,823,236'Stator winding for rotating electric machine'2014 8,294,309'Electrical rotating machine'2012 8,125,116'Alternator for vehicle and rotating electrical machine'2012 7,759,837'Rotating electrical machine'2010 7,701,109'Rotating electrical machine'2010 7,021,323'Dust-incompatible article transfer container cleaner'2006 D0510362'Icon image for a portion of a display screen'2005 6,949,863'Metal-graphite brush'2005 D0492696'Icon image for a portion of a display screen'2004 6,755,882'Metal-graphite brush'2004 6,652,658'Method for machining/cleaning by hydroxide ion in ultrapure water'2003 6,398,475'Container'2002 6,333,576'Brushless motor for vehicle air conditioner'2001 D0444601'Cleaner assembly'2001 D0444273'Cleaner'2001 D0441764'Icon image for portion of a display screen'2001 6,204,583'Centerpiece structure of brush-less motor and method of manufacturing brush-less motor'2001 6,186,331'Container'2001 6,063,997'Gas insulated electric apparatus'2000 D0424015'Car charger'2000 6,036,031'Substrate cassette and side rail therefor'2000 6,002,085'Gas insulated switchgear'1999 5,935,460'Method of performing high-efficiency machining by high-density radical reaction using a rotating electrode, device for performing the method and the rotating electrode used therefor'1999 5,877,672'Resistor and resistor manufacturing method'1999 5,438,561'Method for recording and reproducing information using an optical memory'1995 5,420,838'Disk recording and reproducing device'1995 5,410,116'Gas isolated disconnecting switch and gas isolated switching device'1995 5,408,264'Three-dimensional image display apparatus for optically synthesizing images formed on different surfaces on a display screen'1995 5,355,633'Method of grinding a workpiece having plural cylindrical portions with plural grinding wheels'1994 5,325,344'Magneto-optical recording and reproducing device having integrally formed recording and reproducing magnetic heads'1994 5,293,280'Magnetic recording and reproduction apparatus for data processing unit and magnetic tape for use in such apparatus'1994 5,256,976'Power apparatus and method of location of a fault in a power apparatus on the basis of attenuation coefficients of electromagnetic coefficients of fault generated electromagnetic waves'1993 5,251,280'Liquid crystal display apparatus'1993 D0338991'Wafer basket'1993 5,214,636'Optical recording element having a plurality of thin film filtering layers and optical recording element having an electrically conductive layer'1993 5,202,862'Magneto-optical recording and reproducing device having integrally formed recording and reproducing magnetic heads'1993 5,193,682'Wafer basket'1993 5,187,703'Magneto-optical multilayer recording disk and method of reproducing the same'1993 5,173,330'Patterning composition and method for patterning on a substrate'1992 5,146,170'Method and apparatus for locating an abnormality in a gas-insulated electric device'1992 4,947,261'Portable image input device'1990 4,829,256'Insulation testing device for gas insulated apparatus'1989 4,818,825'Insulating spacers for use in gas-insulated electric apparatus'1989 4,672,150'Conductor supporting apparatus for gas insulated equipment'1987 4,667,061'Gas insulated apparatus with internal coated insulation layer of high dielectric constant'1987 4,566,864'Electric fan device for automotive vehicle'1986 4,564,721'Gas-insulated electrical apparatus with electret for captivating conductive particles and method of removing such particles during assembly thereof'1986 4,549,132'Method of testing and verifying a performance for insulation to ground of a disconnecting switch when breaking a charging current'1985 4,508,251'Cable pulling/feeding apparatus'1985 4,345,471'Temperature measurement apparatus'1982 4,112,418'Lightning current responsive alarm'1978 3,957,513'Method of free radical photography utilizing a short light flash for exposure'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2012Patents assigned to HITACHI LTD (16)· patent assignee history

1978–2000Based in Hitachi, JP· patent location history

1986–2005Based in Kariya, JP· patent location history

1990–1995Patents assigned to SHARP KK (10)· patent assignee history

1990–2003Based in Nara, JP· patent location history

1993–2005Based in Saitama, JP· patent location history

2000–2004Patents assigned to PHILIP MORRIS INC (5)· patent assignee history

2010–2020Based in Hitachinaka, JP· patent location history

2012–2020Patents assigned to HITACHI AUTOMOTIVE SYSTEMS LTD (7)· patent assignee history

2012–2015Patents assigned to ISHIKAWA TOSHIO (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	16	1978–2012
SHARP KK	10	1990–1995
HITACHI AUTOMOTIVE SYSTEMS LTD	7	2012–2020
ISHIKAWA TOSHIOself	5	2012–2015
PHILIP MORRIS INC	5	2000–2004

Locations

Location	Patents	Span
Nara, JP	12	1990–2003
Hitachi, JP	12	1978–2000
Hitachinaka, JP	10	2010–2020
Saitama, JP	9	1993–2005
Kariya, JP	5	1986–2005