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Inventor

Takeshi Kawai

Inventor
Kanagawa, JP

Overview

45→
Patents
1988–2017
Patent span
Physics
Primary field (CPC G)

Patents· 45 as inventor

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

G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties20%
G03GElectrography14%
C07CAcyclic or carbocyclic compounds12%
F02DControlling combustion engines8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
C07BGeneral methods of organic chemistry5%
C01BNon-metallic elements4%
Y10TTechnical subjects covered by former us classification4%
B01DSeparation3%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%
PatentTitleYear
9,823,220'NOx concentration detection apparatus and NOx concentration detection method'20179,723,387'Optical signal processing device with an array waveguide coupled to a slab waveguide with two arcs'20179,645,321'Optical signal processing device'20179,429,541'Gas sensor element, gas sensor and control system of gas sensor'20169,201,040'Gas sensor'20159,182,700'Cleaning member for image forming apparatus, charging device, unit for image forming apparatus, process cartridge, image forming apparatus'20159,014,590'Cleaning member, charging device assembly, and image forming apparatus'20158,989,618'Cleaning member for image forming apparatus, charging device, unit for image forming apparatus, process cartridge, and image forming apparatus'20158,891,999'Cleaning member and charging device, unit for image forming apparatus and process cartridge, and image forming apparatus'20148,877,024'Sensor control device and sensor control method'20148,538,287'Cleaning member for image forming apparatus, charging device, unit for image forming apparatus, process cartridge, and image forming apparatus'20138,526,845'Cleaning member for image forming apparatus including a core and an elastic layer, charging device, unit for image forming apparatus, process cartridge, and image forming apparatus'20138,515,305'Cleaning unit including an elastic member spirally wound around and fixed to a shaft'20138,513,961'Detection method for defect of sensor'20138,467,697'Cleaning member for image forming apparatus, charging device, unit for image forming apparatus, process cartridge, and image forming apparatus'20138,412,069'Charging unit, manufacturing method for charging unit, process cartridge and image forming device'20138,401,421'Charging device, method for producing charging device, process cartridge, and image forming apparatus'20138,266,953'Method and apparatus for detecting abnormality of nitrogen oxide purifying catalyst'20128,188,326'Process for producing adamantane'20128,127,594'Gas sensor'20127,964,073'Air fuel ratio detection apparatus'20117,951,277'Gas sensor and method for manufacturing the same'20117,518,025'Process for producing alkyl aromatic compound'20097,405,331'High-purity (fluoroalkyl)benzene derivative and process for producing the same'20087,297,821'Fluorine compound and fluorinating agent comprising the compound'20077,084,379'Control apparatus for gas sensor'20067,019,173'Fluorine compound and fluorinating agent comprising the compound'20066,710,009'Catalysts for producing methylamines and method for manufacturing the same'20046,590,124'Catalysts for producing methylamines and method for manufacturing the same'20036,510,307'Transfer device, image-forming apparatus using the same and method for producing transferring member'20036,495,724'Catalysts for producing methylamines and method for manufacturing the same'20026,472,575'Process for producing adamantane'20026,334,946'Method of stabilizing pump current in gas sensor'20026,120,677'Temperature control for all range oxygen sensor'20006,099,717'Method of and apparatus for detecting a deteriorated condition of a wide range air-fuel ratio sensor'20005,976,350'Method of and apparatus for detecting an activated condition of a wide range air-fuel ratio sensor'19995,925,814'Electrolytic exhaust sensor with diffusion layer inhibiting formation of a liquid phase'19995,700,367'Method and apparatus for controlling the energizing of a heater in an oxygen sensor'19975,433,830'Method of activating zirconia oxygen sensor'19955,315,100'Photoelectric conversion apparatus for detecting movement of object with spatial filter electrode'19945,279,886'Alumina sintered body'19945,130,775'Amorphous photo-detecting element with spatial filter'19924,953,002'Semiconductor device housing with magnetic field protection'19904,774,000'Submicron disc filters'19884,724,716'Joint mechanism'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–2015Based in Kanagawa, JP· patent location history
1994–2017Patents assigned to NGK SPARK PLUG CO (18)· patent assignee history
1994–2017Based in Komaki, JP· patent location history
1995–2013Based in Aichi, JP· patent location history
2002–2012Patents assigned to MITSUBISHI GAS CHEMICAL CO (9)· patent assignee history
2002–2004Based in Tsukuba, JP· patent location history
2003–2015Patents assigned to FUJI XEROX CO LTD (11)· patent assignee history
2006–2009Based in Ibaraki, JP· patent location history
2012–2017Patents assigned to KAWAI TAKESHI (17)· patent assignee history
2013–2017Patents assigned to TERAMOTO SATOSHI (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NGK SPARK PLUG CO181994–2017
KAWAI TAKESHIself172012–2017
FUJI XEROX CO LTD112003–2015
MITSUBISHI GAS CHEMICAL CO92002–2012
TERAMOTO SATOSHI42013–2017
Locations
LocationPatentsSpan
Kanagawa, JP141990–2015
Aichi, JP111995–2013
Komaki, JP71994–2017
Ibaraki, JP42006–2009
Tsukuba, JP42002–2004