Inventor
Takasumi Wada
Inventor
Nara, JP
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Gprimary
G03GElectrography43%
B41JTypewriters22%
G02BOptical elements, systems or apparatus8%
H04NPictorial communication, e.g. television5%
F21KNon-electric light sources using luminescence3%
G01RMeasuring electric variables3%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them3%
G09GArrangements or circuits for control of indicating devices using static means to present variable information3%
H01LSemiconductor devices3%
PatentTitleYear
9,194,544'Light emitting device, illuminating apparatus, and display apparatus'20158,525,863'Optical scanning device and image forming apparatus'20138,089,500'Optical scanning device and image forming apparatus provided with the same'20127,791,633'Optical scanning unit and image forming apparatus'20107,755,809'Laser scanning optical system and image forming apparatus'20107,619,799'Light scanning device and image forming apparatus using the same'20097,049,756'Capacitive load driving circuit, capacitive load driving method, and apparatus using the same'20066,447,101'Image forming device'20025,812,160'Image forming apparatus with improved assemblies for tore carrier, toner passage control device and backing electrode'19985,797,062'Measuring device for amount of charge of developer'19985,767,879'Image forming apparatus'19985,600,355'Color image forming apparatus by direct printing method with flying toner'19975,559,586'Image forming device having control grid with applied voltage of the same polarity as toner'19965,546,169'Copying machine with image superposition capability'19965,486,900'Measuring device for amount of charge of toner and image forming apparatus having the measuring device'19965,471,283'Device for preventing breakdown of contact charger for use in electrophotographic printing machine'19955,398,102'Electrophotographic copier and charging means used therefor'19955,374,949'Image forming apparatus'19945,298,945'Electrophotographic printing machine'19944,780,741'Method and apparatus for forming toner layer'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–1998Patents assigned to KYOCERA CORP (3)· patent assignee history
1988–1998Based in Tokyo, JP· patent location history
1994–2015Patents assigned to SHARP KK (17)· patent assignee history
1994–1998Patents assigned to ARRAY PRINTERS AB (2)· patent assignee history
1994–2010Based in Nara, JP· patent location history
2012–2015Patents assigned to SHIRAI NOBUHIRO (3)· patent assignee history
2012–2015Patents assigned to WADA TAKASUMI (3)· patent assignee history
2012–2015Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHARP KK | 17 | 1994–2015 |
| KYOCERA CORP | 3 | 1988–1998 |
| SHIRAI NOBUHIRO | 3 | 2012–2015 |
| WADA TAKASUMIself | 3 | 2012–2015 |
| ARRAY PRINTERS AB | 2 | 1994–1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nara, JP | 14 | 1994–2010 |
| Osaka, JP | 3 | 2012–2015 |
| Tokyo, JP | 3 | 1988–1998 |