LexDanaLexDanabeta
Inventor

Tadashi Iwamatsu

Inventor
Nara, JP

Overview

60→
Patents
1989–2020
Patent span
Physics
Primary field (CPC G)

Patents· 60 as inventor

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

G03Gprimary
G03GElectrography38%
H01JElectric discharge tubes or discharge lamps16%
B82YSpecific uses or applications of nanostructures10%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%
H04NPictorial communication, e.g. television6%
B41JTypewriters4%
G02BOptical elements, systems or apparatus3%
G11BInformation storage based on relative movement between record carrier and transducer3%
H05BElectric heating3%
H01TSpark gaps2%
PatentTitleYear
10,782,265Analysis apparatus202010,763,068Electron emission element and method for same202010,727,021Electron emission element, electrification apparatus, and image forming apparatus202010,692,680Electron emission device and method for manufacturing the same202010,643,815Electron emission device, method for manufacturing same, and method for manufacturing electronic device20209,304,420'Two-component developer, developing device, image forming apparatus, and image forming method'20169,307,627'Electron emitting device with electron acceleration layer containing conductive microparticles'20169,035,548'Electron emission element, electron emission device, charge device, image forming device, electron radiation curing device, light-emitting device, image display device, blower device, cooling device, and manufacturing method for electron emission element'20158,760,056'Electron emitting element, devices utilizing said element, and method for producing said element'20148,741,525'Resin coated carrier, two-component developer, developing device and image forming apparatus'20148,735,041'Method for producing resin-coated carrier, resin-coated carrier, two-component developer, developing device, image forming apparatus and image forming method'20148,616,931'Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, electron-beam curing device, and method for producing electron emitting element'20138,547,007'Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, electron-beam curing device, and method for producing electron emitting element'20138,476,818'Electron emitting element including a fine particle layer containing insulating particles, and devices and methods related thereto'20138,421,331'Electron emitting element and method for producing the same'20138,409,778'Resin coated carrier, two-component developer, developing device and image forming apparatus'20138,401,430'Electron emitting element for accelerating and emitting electrons, and use of electron emitting element'20138,378,565'Electron emitting element having an electron acceleration layer using fine particle layer'20138,299,700'Electron emitting element having an electron acceleration layer, electron emitting device, light emitting device, image display device, cooling device, and charging device'20128,293,446'Resin-coated carrier method of manufacturing the same, two-component developer including resin-coated carrier, developing device and image forming apparatus'20128,249,487'Electron emitting element, electron emitting device, charging device, image forming apparatus, electron-beam curing device, light emitting device, image display device, air blowing device, and cooling device'20128,192,908'Carrier, developer, development device, image forming apparatus and image forming method'20128,164,247'Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, and electron-beam curing device'20128,110,971'Light emitting element, light emitting device, image display device, method of driving light emitting element, and method of producing light emitting element'20127,970,318'Charging device and image forming device using same'20117,885,572'Corona discharge device, photoreceptor charger, and method for making discharge product removing member'20117,809,310'Image forming apparatus'20107,530,279'Sampler for sampling charged particles, and apparatus for measuring charge distribution of the charged particles'20097,515,851'Electron emitter, charger, and charging method'20097,477,442'Display apparatus and method for producing the same'20097,317,285'Electron emission device having cleaning function'20087,307,379'Electron emitting element and image forming apparatus employing it'20077,160,365'Ion generating apparatus, air conditioning apparatus, and charging apparatus'20077,129,965'Exposure device and image forming device'20066,873,813'Development method and image formation apparatus'20056,858,369'Toner and manufacturing method thereof'20056,714,225'Image formation apparatus and image formation method'20046,681,091'Development method and image formation apparatus'20046,596,454'Toner and manufacturing method thereof'20036,496,210'Electrophotographic imaging apparatus'20026,433,803'Exposure apparatus for image formation and image formation method'20026,417,876'Apparatus and method for forming image with high image resolution from images having various dot densities'20026,330,416'Blade for a developing device and methods of making the same'20016,323,888'Image forming apparatus'20016,298,206'Electrophotographic developing apparatus'20016,239,824'Apparatus and method for forming image with superior image reproducibility'20016,154,627'Developing apparatus using one-component toner'20006,087,056'Developing method by flying toner'20006,064,847'Developing device'20006,064,463'Developing apparatus using one-component toner'20006,049,689'Developing apparatus with vibration absorbtion device'20006,035,171'Developing apparatus having means for removing electric charge of toner'20005,978,635'Image developing device using a one-component toner'19995,805,315'Holographic scanner including a rotary hologram disk between a front hologram and a rear hologram'19985,680,232'Holographic scanner including a rotary hologram disk between a front hologram and a rear hologram'19975,262,908'Tracking control device for magnetic recording/reproducing apparatus'19935,196,969'Head positioning system for serpentine magnetic recording/reproducing system'19935,148,336'Magnetic recording and reproducing apparatus'19924,907,016'Recording head for use in an electrically excited transfer recording device'19904,866,463'Electrified transfer recording apparatus'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2020Patents assigned to SHARP KK (60)· patent assignee history
1989–1990Based in Tenri, JP· patent location history
1992–2012Based in Nara, JP· patent location history
2012–2016Patents assigned to IWAMATSU TADASHI (18)· patent assignee history
2012–2014Patents assigned to HIRAKAWA HIROYUKI (13)· patent assignee history
2012–2015Patents assigned to NAGAOKA AYAE (12)· patent assignee history
2012–2014Patents assigned to IMURA YASUO (10)· patent assignee history
2012–2016Based in Osaka, JP· patent location history
2020Based in Sakai, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHARP KK601989–2020
IWAMATSU TADASHIself182012–2016
HIRAKAWA HIROYUKI132012–2014
NAGAOKA AYAE122012–2015
IMURA YASUO102012–2014
Locations
LocationPatentsSpan
Nara, JP351992–2012
Osaka, JP182012–2016
Sakai, JP52020
Tenri, JP21989–1990