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Inventor

Takao Izumi

Inventor
Yokohama-shi, Kanagawa, JP

Overview

53→
Patents
1984–2021
Patent span
Physics
Primary field (CPC G)

Patents· 53 as inventor

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

G03Gprimary
G03GElectrography53%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy8%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution8%
C01BNon-metallic elements6%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%
B41JTypewriters3%
Y02PClimate change mitigation technologies in the production or processing of goods3%
Y02TClimate change mitigation technologies related to transportation3%
Y10TTechnical subjects covered by former us classification3%
B01BBoiling1%
PatentTitleYear
10,942,473Airflow guides in developing device202110,866,553Image forming apparatus, determination method, and developer processing apparatus configured to determine timing for replacement of developer based on a history of a deterioration index202010,754,293Image forming apparatus having heater, temperature sensor and controller which disables print suspend operation202010,754,283Image forming apparatus and system that reduce defects caused by residual toner202010,483,579Solid oxide fuel cell201910,270,118Solid oxide fuel cell201910,256,481Seal structure for fuel cell20199,308,509'Reformer'20169,032,913'Internal combustion engine system'20158,960,831'Inkjet head and an inkjet recording device'20158,834,612'Hydrogen separation apparatus and process for manufacturing the same'20148,598,458'Electronic device and method of manufacturing the same'20138,328,309'Ink jet head and method of driving the same'20128,244,161'Developing apparatus'20128,238,798'Developing device and developing method for image forming apparatus'20128,213,812'Image forming apparatus, method of determining deterioration degree of development agent, and program of determining deterioration degree of development agent'20128,195,071'Developing device'20128,131,186'Developing device'20128,107,834'Image forming apparatus and control method for the same'20128,099,002'Developing device of image forming apparatus using a toner and carrier mixture'20128,045,897'Developing device'20118,000,637'Supplying and discharging developer in an image forming apparatus, process cartridge and developing device'20117,995,955'Image forming apparatus, developing device and developer discharge mechanism'20117,899,379'Image forming apparatus and toner manufacturing method'20117,831,181'Developing device'20107,742,712'Transfer bias voltage controlling apparatus'20107,684,717'Image forming apparatus and image forming method'20107,496,306'Cleaning method for transfer device of image forming apparatus'20097,465,325'Fuel reforming system and warmup method thereof'20087,383,002'Developing device, process cartridge and image forming apparatus'20087,356,291'Developing unit, image forming apparatus method that supplies inverse transfer preventing agent with inverse polarity'20087,146,801'Fuel vaporizing device'20067,099,615'Image forming apparatus with guide member guiding image forming medium'20066,959,160'Image forming apparatus'20056,785,486'Image forming apparatus'20046,766,125'Image forming apparatus'20046,625,414'Image forming apparatus with recovery device for recovering color developers'20036,567,639'Fixing device for heat pressure fixing a record medium and method thereof'20036,539,193'Developing apparatus and image forming apparatus for stably forming a developer layer on a developer device'20036,519,434'Image forming apparatus'20036,519,437'Prevention of excessive toner accumulation in a developing apparatus'20036,516,174'Developing apparatus having developer regulating blade'20036,512,910'Developing apparatus'20036,501,923'Image forming apparatus with increased heat dissipation structure'20026,484,006'Developing device with developer layer regulating blade'20026,473,573'Developing apparatus with temperature sensor'20026,337,967'Image forming apparatus for superposing monochrome images'20026,167,229'Image forming apparatus for enabling easy separation of recording sheets from photosensitive member'20006,044,244'Image forming apparatus for enabling easy separation of recording sheets from photosensitive member'20006,009,286'Image forming apparatus with disturbance elimination'19995,698,356'Method of manufacturing developing agent'19975,404,211'Developing device including device for selecting varying the thickness of the developing agent'19954,464,743'Record playing apparatus'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2021Patents assigned to TOSHIBA KK (27)· patent assignee history
1995–2020Based in Yokohama-shi, Kanagawa, JP· patent location history
1997Based in Yokahoma, JP· patent location history
1999–2021Based in Kanagawa, JP· patent location history
2002–2021Patents assigned to TOSHIBA TEC KK (38)· patent assignee history
2006–2019Patents assigned to NISSAN MOTOR (8)· patent assignee history
2006–2016Based in Yokosuka, JP· patent location history
2012–2016Patents assigned to IZUMI TAKAO (12)· patent assignee history
2012Patents assigned to MURATA HIROSHI (6)· patent assignee history
2013Based in Obu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOSHIBA TEC KK382002–2021
TOSHIBA KK271995–2021
IZUMI TAKAOself122012–2016
NISSAN MOTOR82006–2019
MURATA HIROSHI62012
Locations
LocationPatentsSpan
Yokohama-shi, Kanagawa, JP231995–2020
Kanagawa, JP221999–2021
Yokosuka, JP52006–2016
Obu, JP12013
Yokahoma, JP11997