LexDanaLexDanabeta
Inventor

Kiyoshi Toizumi

Inventor
Nara, JP

Overview

32→
Patents
1997–2021
Patent span
Physics
Primary field (CPC G)

Patents· 32 as inventor

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

G03Gprimary
G03GElectrography88%
B41JTypewriters3%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
G06FElectric digital data processing3%
H04NPictorial communication, e.g. television3%
PatentTitleYear
11,044,375Multifunctional apparatus having external recording medium slot20218,590,372'Device and method for measuring toner adhesion'20138,372,572'Toner, two-component developer, developing device and image forming apparatus'20138,053,155'Toner, two-component developer, developing device, and image forming apparatus'20117,761,020'Image forming apparatus utilizing cylindrical toner particles'20107,524,600'Electrophotographic toner'20097,283,775'Developing device using specific charging unit for charging toner and image forming device adopting the same'20077,071,960'Image forming apparatus'20067,015,938'Charging system'20066,934,496'Developing device conveying toner using a traveling-wave electric field and image forming apparatus using same'20056,901,232'Developing apparatus and image forming apparatus using progressive wave electric field transport'20056,865,350'Charging method and developing device adopting the same'20056,858,369'Toner and manufacturing method thereof'20056,829,446'Development device, charging method used in the development device and image forming device having the development device'20046,697,592'Developing device, and image forming device having the same'20046,600,892'Developing device, charging method used therefor, and printing apparatus having the developing device'20036,596,454'Toner and manufacturing method thereof'20036,438,346'Developing device, printing device, and charging method through contact'20026,259,869'Image forming apparatus'20016,233,422'Image forming apparatus having transfer drum with transfer paper charging member'20016,169,862'Image forming apparatus with nip time changing device'20016,118,954'Image forming apparatus having transfer roller with charge-removing and cleaning devices'20006,108,514'Sheet conveying system'20006,081,686'Image forming apparatus having transfer drum with specific construction'20006,081,685'Transfer apparatus having a transfer drum'20006,026,256'Image forming apparatus'20006,011,938'Fixing device in image forming device'20005,956,547'Image forming device equipped with fixing device'19995,812,923'Image forming apparatus equipped with register rollers for curling transfer paper'19985,799,225'Image forming apparatus having variable transfer and attraction voltage'19985,697,034'Image forming apparatus which stably holds a uniform surface potential of a transfer device'19975,623,329'Transfer device for an image forming apparatus'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2021Patents assigned to SHARP KK (32)· patent assignee history
1997–2001Based in Chiba, JP· patent location history
1997–2000Based in Yamatokoriyama, JP· patent location history
1999–2000Based in Yamatokooriyama, JP· patent location history
2002–2013Based in Nara, JP· patent location history
2013Patents assigned to SHIBAI YASUHIRO (2)· patent assignee history
2013Patents assigned to TOIZUMI KIYOSHI (2)· patent assignee history
2013Patents assigned to ARIYOSHI SATORU (1)· patent assignee history
2013Patents assigned to NAKAMURA TADASHI (1)· patent assignee history
2021Based in Sakai, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SHARP KK321997–2021
SHIBAI YASUHIRO22013
TOIZUMI KIYOSHIself22013
ARIYOSHI SATORU12013
NAKAMURA TADASHI12013
Locations
LocationPatentsSpan
Nara, JP162002–2013
Chiba, JP91997–2001
Yamatokoriyama, JP31997–2000
Yamatokooriyama, JP21999–2000
Sakai, JP12021