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Inventor

Keisuke Sakai

Inventor
Kyoto, JP

Overview

20→
Patents
1976–2019
Patent span
Electricity
Primary field (CPC H)

Patents· 20 as inventor

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

G06Fprimary
G06FElectric digital data processing24%
H05BElectric heating16%
G11CStatic stores11%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1011%
H10HInorganic light-emitting semiconductor devices having potential barriers8%
B29CShaping or joining of plastics5%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications5%
Y10TTechnical subjects covered by former us classification5%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form3%
F16FSprings3%
PatentTitleYear
10,495,178Torque fluctuation inhibiting device, torque converter and power transmission device201910,433,381LED drive circuit20199,898,403'Voltage control circuit for providing two voltages generated based on a parameter corresponding to an input signal'20189,485,830'LED lighting apparatus'20169,405,671'Process execution control based on the internal states of flash memories and power supply circuit information'20169,380,657'LED lighting device'20169,277,615'LED drive circuit'20168,933,636'LED driving circuit'20158,592,849'LED light source and chromaticity adjustment method for LED light source'20138,222,054'LED light source and chromaticity adjustment method for LED light source'20128,212,429'Interface device for host device, interface device for slave device, host device, slave device, communication system and interface voltage switching method'20128,207,638'Interface device for host device, interface device for slave device, host device, slave device, communication system and interface voltage switching method'20128,067,861'Interface device for host device, interface device for slave device, host device, slave device, communication system and interface voltage switching method'20117,884,545'LED light source and method for adjusting chromaticity of LED light source'20117,475,185'Nonvolatile memory system, nonvolatile memory device, memory controller, access device, and method for controlling nonvolatile memory device'20097,321,959'Control method of a non-volatile memory apparatus'20086,944,060'Non-volatile storage device and control method thereof'20056,922,768'Non-volatile storage device and control method thereof'20056,471,900'Method for fabricating a connector for an electronic circuit by terminal insert molding'20023,999,928'Apparatus for shaping synthetic resin material'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005–2008Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (3)· patent assignee history
2005Based in Takatsuki, JP· patent location history
2008–2018Based in Kyoto, JP· patent location history
2009–2018Patents assigned to PANASONIC CORP (6)· patent assignee history
2011–2016Patents assigned to CITIZEN HOLDINGS CO LTD (7)· patent assignee history
2011–2016Patents assigned to SAKAI KEISUKE (7)· patent assignee history
2011–2016Based in Matsudo, JP· patent location history
2012Based in Osaka, JP· patent location history
2016–2019Patents assigned to CITIZEN ELECTRONICS (4)· patent assignee history
2016Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CITIZEN HOLDINGS CO LTD72011–2016
SAKAI KEISUKEself72011–2016
PANASONIC CORP62009–2018
CITIZEN ELECTRONICS42016–2019
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD32005–2008
Locations
LocationPatentsSpan
Kyoto, JP52008–2018
Matsudo, JP52011–2016
Chiba, JP22016
Osaka, JP22012
Takatsuki, JP22005