Inventor

Keiichi Ishikawa

Inventor

Tokyo, JP

Overview

60→

Patents

1978–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 60 as inventor

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

F16Hprimary

F16HGearing14%

G03GElectrography7%

F23GCremation furnaces6%

B01DSeparation5%

Y10TTechnical subjects covered by former us classification5%

F16DCouplings for transmitting rotation4%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%

F04BPositive-displacement machines for liquids3%

F23LSupplying air or non-combustible liquids or gases to combustion apparatus in general3%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%

PatentTitleYear

10,995,475Construction machine2021 10,907,666Hydraulic drive system2021 10,723,953Carbide producing method and carbide producing device2020 10,641,256Vacuum pump with abatement function2020 10,641,272Vacuum pump with abatement function2020 10,632,419Vacuum pump with abatement function2020 10,626,331Biomass fuel production plant2020 10,465,119Externally heated carbonization furnace2019 10,274,854Toner for developing electrostatic charge image and method for preparing the same2019 10,261,430Photoreceptor for electrophotography and image forming apparatus employing the same2019 10,234,780Toner for developing electrostatic charge image and method for preparing the same2019 10,184,082Biomass pyrolysis apparatus, and power generation system2019 10,143,964Vacuum pump with abatement function2018 9,956,524Vacuum pump with abatement function2018 9,822,974'Vacuum pump with abatement function'2017 9,740,125'Toner for developing electrostatic charge image and method for preparing the same'2017 9,364,786'Exhaust gas abatement apparatus'2016 9,302,576'Power transmitting apparatus for a hybrid vehicle'2016 8,973,454'Power transmitting apparatuses'2015 8,801,573'Power transmitting apparatuses'2014 8,758,198'Power transmitting apparatuses'2014 8,424,661'Power transmitting apparatus'2013 8,413,546'Power transmitting apparatuses'2013 8,360,914'Power transmitting apparatuses'2013 8,323,148'Power transmitting apparatuses'2012 8,269,576'Coaxial connector having a dielectric material for impedance matching'2012 8,262,539'Power transmitting apparatus'2012 8,245,826'Power transmitting apparatus'2012 8,246,511'Power transmitting apparatuses'2012 8,216,206'Disposable absorbent article'2012 8,205,534'Cutting methods and cutting apparatus'2012 8,026,774'Radio frequency signal transmission method with coaxial connection having a dielectric material for impedance matching'2011 7,952,449'Coaxial connector having a dielectric material for impedance matching'2011 7,607,914'Combustion type waste gas treatment system'2009 7,115,702'Binder resin for toner and toners'2006 7,112,060'Burner for treating waste gas'2006 7,005,513'Functionalized glycosaminoglycan polymer and medical instruments and drugs by using the same'2006 6,948,929'Combustion type waste gas treatment system'2005 6,736,635'Combustor for exhaust gas treatment'2004 6,638,343'Exhaust gas treating device'2003 5,444,443'Sound source determining system'1995 5,427,883'Toner composition for electrophotography'1995 5,317,937'Control system for vehicle automatic transmission'1994 5,279,915'Toner composition for electrophotography'1994 5,202,212'Toner composition for electrophotography'1993 4,982,623'Method of controlling the automatic transmission of a vehicle'1991 4,963,456'Electrophotographic toner'1990 4,957,015'Holding means and binding means for selector gear servo valve in a hydraulic transmission'1990 4,941,559'Wet friction member, and wet frictional engagement apparatus for a transmission using the same'1990 4,934,207'Hydraulically operated transmission with reverse torque limiter'1990 4,901,603'Control apparatus for hydraulically operated vehicular transmissions'1990 4,833,057'Toner composition for the electrophotography'1989 4,768,635'Control for the clutch of a fluid torque converter in a vehicular transmission'1988 4,741,920'Mesh and printing screen for screen printing and a method for the preparation thereof'1988 4,645,051'Brake and speed responsive controlled transmission'1987 4,619,350'Clutch operation control system for fluid torque converter of vehicular transmission'1986 4,562,905'Clutch operation control system for fluid torque converters'1986 4,561,114'Cochannel interference measurement system'1985 4,488,457'Malfunction prevention device of automotive hydraulic transmission'1984 4,101,266'Fire prevention device for the fixing stage of an electrophotographic machine'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1994Patents assigned to HONDA MOTOR CO LTD (10)· patent assignee history

1984–1994Based in Saitama, JP· patent location history

1988–2016Patents assigned to ISHIKAWA KEIICHI (15)· patent assignee history

1989–2009Based in Kanagawa, JP· patent location history

1990–2020Based in Yokohama, JP· patent location history

2003–2020Patents assigned to EBARA CORP (12)· patent assignee history

2003–2020Based in Tokyo, JP· patent location history

2012–2016Patents assigned to ASATSUKE SHOUJI (10)· patent assignee history

2012–2016Patents assigned to FCC KK (10)· patent assignee history

2012–2016Based in Hamamatsu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ISHIKAWA KEIICHIself	15	1988–2016
EBARA CORP	12	2003–2020
ASATSUKE SHOUJI	10	2012–2016
FCC KK	10	2012–2016
HONDA MOTOR CO LTD	10	1984–1994

Locations

Location	Patents	Span
Tokyo, JP	10	2003–2020
Yokohama, JP	9	1990–2020
Hamamatsu, JP	9	2012–2016
Kanagawa, JP	6	1989–2009
Saitama, JP	6	1984–1994