Inventor

Keiji Takahashi

Inventor

Akashi, JP

Overview

1986–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 68 as inventor

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

B63Bprimary

B63BShips or other waterborne vessels6%

B60PVehicles adapted for load transportation or to transport, to carry, or to comprise special loads or objects5%

B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for5%

Y02TClimate change mitigation technologies related to transportation5%

B63HMarine propulsion or steering4%

H02JElectric power networks4%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters4%

B41JTypewriters3%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles3%

F02MSupplying combustion engines in general with combustible mixtures or constituents thereof3%

PatentTitleYear

11,111,650Hydraulic drive system for construction machine2021 11,105,070Hydraulic work machine2021 10,013,159Driving support information display configuration and device using the same2018 9,943,023Lift control apparatus for ground work apparatus2018 9,925,124'Dental composition suitable for grinding with automatic grinding apparatus'2018 9,759,319'Traveling work vehicle'2017 9,725,090'Speed control for working vehicle'2017 9,526,599'Occlusal wear evaluation apparatus and occlusal wear evaluation method'2016 9,512,809'Utility vehicle'2016 9,511,701'Utility vehicle'2016 9,511,806'Utility vehicle'2016 9,410,512'Air intake apparatus for four wheeled utility vehicle'2016 9,403,467'Utility vehicle'2016 9,352,496'Utility vehicle'2016 9,284,912'Cover structure of plug hole'2016 9,220,663'Dental composition'2015 9,187,023'Utility vehicle'2015 9,108,559'Utility vehicle'2015 9,103,428'Structure for coupling V-belt type continuously variable transmission with engine'2015 9,050,887'Utility vehicle'2015 8,979,123'Utility vehicle'2015 8,910,472'Utility vehicle'2014 D0714287'Personal computer'2014 8,648,279'Process control apparatus and laser processing apparatus'2014 8,494,241'Occlusion evaluation apparatus and occlusion evaluation method'2013 8,304,356'Aluminosilicate glass and color adapting composition for ceramics'2012 8,130,216'Display device having display area and non-display area, and driving method thereof'2012 7,832,383'Engine and personal watercraft'2010 7,586,222'Voltage controller for alternator of vehicle'2009 7,392,779'Engine equipped with air-intake device for personal watercraft and personal watercraft'2008 7,367,856'Personal watercraft'2008 7,344,424'Water-jet propulsion personal watercraft'2008 7,333,096'Display device and driving method thereof'2008 7,253,591'Electric power generation control apparatus'2007 7,230,547'Indicator light apparatus of marine vessel'2007 7,219,635'Four-cycle engine and system for detecting phase difference of four-cycle engine'2007 7,202,846'Signal line drive circuit and display device using the same'2007 7,180,271'Vehicle generator regulating apparatus'2007 7,137,364'Cooling system of engine for personal watercraft'2006 7,052,343'Personal watercraft'2006 7,044,814'Main switch apparatus of small watercraft'2006 6,896,566'Personal watercraft'2005 6,769,763'Cylinder pump, an ink jet printing system using the cylinder pump and a photograph assembly having the printing system'2004 6,756,761'Vehicular generator control system and method responsive to external signals'2004 6,707,276'Voltage regulator of AC generator having circuit for detecting voltage induced in field coil'2004 6,664,767'Voltage regulator of vehicle AC generator having variable bypass circuit resistance'2003 6,612,683'Ink supply recovery system, ink-jet printing apparatus and image pick-up device having recording mechanism'2003 6,614,207'Vehicular power generator control apparatus having maximum conduction rate limiting function'2003 6,609,709'Sheet member feeding device, recording apparatus employing the same and image pick-up apparatus with recording mechanism'2003 6,607,306'Resin ferrule for use in optical fiber connector and molding die therefor'2003 6,551,152'Jet-propulsive watercraft'2003 6,523,933'Media cartridge and image recording apparatus with detachably mountable media cartridge'2003 6,478,638'Jet-propulsion watercraft'2002 D0462088'Ink paper pack'2002 6,433,519'Voltage control unit for vehicular AC generator'2002 D0453183'Ink paper pack'2002 6,177,768'Discharge lamp lighting device and illumination device'2001 5,951,145'Lighting apparatus'1999 5,846,490'Automated test strip supplying system'1998 5,834,698'Composite cable with built-in signal and power cables'1998 5,755,591'Branch unit structure for an input unit and an output unit in a sequencer'1998 5,560,470'Means for discriminating sides of test strips in automated analyzer'1996 5,552,116'Test strip pick-up mechanism in automated analyzer'1996 5,540,887'Test strip overturning mechanism in automated analyzer'1996 5,291,358'Magnetic recording device'1994 5,237,242'Apparatus for operating a discharge lamp and a lighting unit having the apparatus'1993 4,821,561'Method of metering an air-gap in an electric rotating machine'1989 4,617,577'Thermal-image-transfer recording apparatus'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–1998Based in Hiratsuka, JP· patent location history

2002–2016Patents assigned to KAWASAKI HEAVY IND LTD (25)· patent assignee history

2002–2009Patents assigned to DENSO CORP (8)· patent assignee history

2002–2004Patents assigned to CANON KK (6)· patent assignee history

2002–2016Based in Akashi, JP· patent location history

2002–2007Based in Kariya, JP· patent location history

2012–2018Patents assigned to TAKAHASHI KEIJI (6)· patent assignee history

2012–2018Patents assigned to SHOFU KK (5)· patent assignee history

2012–2018Based in Kyoto, JP· patent location history

2017–2018Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KAWASAKI HEAVY IND LTD	25	2002–2016
DENSO CORP	8	2002–2009
CANON KK	6	2002–2004
TAKAHASHI KEIJIself	6	2012–2018
SHOFU KK	5	2012–2018

Locations

Location	Patents	Span
Akashi, JP	24	2002–2016
Kariya, JP	7	2002–2007
Kyoto, JP	5	2012–2018
Osaka, JP	4	2017–2018
Hiratsuka, JP	4	1996–1998