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Inventor

Masashi Hirai

Inventor
Katano, JP

Overview

37→
Patents
1989–2019
Patent span
Physics
Primary field (CPC G)

Patents· 37 as inventor

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

G03Gprimary
G03GElectrography64%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables6%
B26DCutting4%
B26FPerforating4%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors4%
G02BOptical elements, systems or apparatus4%
H03HImpedance networks, e.g. resonant circuits4%
H04NPictorial communication, e.g. television4%
Y10TTechnical subjects covered by former us classification4%
B41JTypewriters2%
PatentTitleYear
10,451,778Diffuser plate and method for producing diffuser plate201910,126,549Method for designing light diffusion patter, method for manufacturing light diffusion plate, and light diffusion plate201810,044,339Piezoelectric device20189,128,420'Belt unit and image forming apparatus'20159,091,967'Image forming apparatus'20158,881,891'Belt unit and image forming apparatus'20148,824,916'Belt conveyor member and image forming apparatus'20148,699,902'Image forming apparatus of intermediate transfer method, including pre-secondary-transfer charging section and concentration detection section'20148,355,659'Fixing device and image forming apparatus having same'20138,295,726'Fixing device, image forming apparatus, and method for controlling fixing device'20127,919,908'Piezoelectric resonator device'20117,917,071'Transfer belt unit and image forming apparatus using the same'20117,801,464'Ion generating device with a discharge electrode on a dielectric body coated by a protective layer made of metal'20107,725,052'Ion generating device and image forming apparatus including same'20107,548,709'Transfer unit, transfer method, and image forming apparatus'20097,257,351'Detaching/attaching mechanism and image forming device'20077,251,445'Image formation device and image forming method using same'20077,162,178'Transfer device and image forming apparatus'20077,162,192'Transfer belt device and image forming apparatus'20077,139,498'Image forming apparatus having transfer bias voltage'20067,085,504'Image forming apparatus'20066,957,022'Image forming apparatus'20056,889,027'Multicolored image forming apparatus for forming multicolored and monochromatic images'20056,876,820'Image forming apparatus'20056,775,486'Image forming apparatus'20046,411,792'Image forming device'20026,301,023'Image forming apparatus'20016,173,141'Apparatus for forming color images by the superimposition of visualized latent images having drive means for simultaneously driving at least a recording medium conveying means and a source of black visualized latent images'20016,148,168'Apparatus for forming superimposed image patterns having controlled densities'20006,108,514'Sheet conveying system'20006,014,920'Paper-punching device for use in a image-forming apparatus'20005,884,133'Electrostatic image transfer apparatus'19995,839,336'Paper-punching device for use in an image-forming apparatus'19985,655,173'Image forming apparatus'19975,651,542'Paper feeder'19975,339,144'Recording paper separating device with constant current control'19944,847,652'Image transfer device'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–2015Patents assigned to SHARP KK (33)· patent assignee history
1994–2000Based in Ikoma, JP· patent location history
1997–2011Based in Katano, JP· patent location history
2011–2018Patents assigned to DAISHINKU CORP (2)· patent assignee history
2011–2018Based in Kakogawa, JP· patent location history
2012–2014Patents assigned to HIRAI MASASHI (4)· patent assignee history
2012–2013Patents assigned to IDE ATSUSHI (2)· patent assignee history
2012–2013Patents assigned to KAGAWA TOSHIAKI (2)· patent assignee history
2012–2015Based in Osaka, JP· patent location history
2019Based in Kamisu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHARP KK331989–2015
HIRAI MASASHIself42012–2014
DAISHINKU CORP22011–2018
IDE ATSUSHI22012–2013
KAGAWA TOSHIAKI22012–2013
Locations
LocationPatentsSpan
Katano, JP211997–2011
Osaka, JP72012–2015
Ikoma, JP41994–2000
Kakogawa, JP22011–2018
Kamisu, JP12019