Inventor
Junichi Maruyama
Inventor
Yokohama, JP
Overview
Patents· 55 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G09Gprimary
G09GArrangements or circuits for control of indicating devices using static means to present variable information35%
G06FElectric digital data processing16%
H01HElectric switches16%
G11CStatic stores11%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%
B25BTools or bench devices not otherwise provided for, for fastening, connecting, disengaging, or holding4%
B23PMetal-working not otherwise provided for1%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure1%
G05DSystems for controlling or regulating non-electric variables1%
H01LSemiconductor devices1%
PatentTitleYear
10,235,951Liquid crystal display device201910,043,777Display device201810,007,379Display device with built-in touch detection function20189,972,235Liquid crystal display device including display panel and display control circuit20189,940,865Liquid crystal display device20189,922,610'Display device'20189,842,710'Key switch device and keyboard'20179,786,213'Display device with basic control mode and low frequency control mode'20179,489,901'Display device'20169,251,749'Liquid crystal display device with grey-scale voltage correction'20169,214,294'Key switch device, and method of manufacturing key switch device'20159,111,504'Liquid crystal display device with correction unit to generate correction gray level signal voltages'20159,105,254'Liquid crystal display device that suppresses deterioration of image quality'20159,013,517'Liquid crystal display device'20158,957,883'Display device'20158,922,597'Liquid crystal display device'20148,847,865'Liquid crystal display device that suppresses deterioration of image quality'20148,759,705'Push button-type switch device'20148,743,040'Liquid crystal display device with correction unit to generate correction gray level signal voltages'20148,648,785'Display device for calculating and supplying a precharge potential'20148,624,140'Key switch and keyboard'20148,599,119'Backlight device and display device'20138,531,383'Display device with luminance variation control unit'20138,446,356'Display device'20138,436,265'Keyboard'20138,431,852'Key switch device'20138,310,437'Backlight device and display device'20128,280,190'Image display device, image processing circuit, and image processing method'20128,223,563'Nonvolatile memory'20128,207,465'Key switch unit'20128,120,629'Display device'20128,026,885'Display device and display system'20117,995,018'Display device'20117,933,158'Nonvolatile memory'20117,847,771'Display device capable of adjusting divided data in one frame'20107,817,480'Nonvolatile memory'20107,649,512'Organic EL display device, and method for driving the organic EL display device'20107,525,852'Nonvolatile memory'20097,366,034'Nonvolatile memory'20087,230,859'Nonvolatile memory'20077,110,009'Display control circuit and display driving circuit'20067,062,618'Transferring data between volatile and non-volatile memories based on system parameters using a controller'20067,012,845'Nonvolatile memory with control circuit adapted to distinguish between command signal interface specifications and having an error correction function'20066,915,427'Hub apparatus with copyright protection function'20056,868,032'Nonvolatile memory'20056,788,575'Nonvolatile memory'20046,618,239'Key switch and keyboard'20036,501,038'Key switch and keyboard'20026,376,789'Key switch and keyboard'20026,257,782'Key switch with sliding mechanism and keyboard'20015,874,696'Key switch, keyboard and portable information processing unit with keyboard'19995,813,521'Keyswitch having a reduced height and a keyboard using such a keyswitch'19985,715,894'Impact screw-tightening apparatus'19985,366,026'Impact type clamping apparatus'19945,181,575'Impact wrench having torque controlling faculty'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–2013Based in Yokohama, JP· patent location history
1998–2017Based in Tokyo, JP· patent location history
2003–2014Based in Shinagawa-ku, JP· patent location history
2010–2013Patents assigned to HITACHI DISPLAYS LTD (8)· patent assignee history
2012–2019Patents assigned to PANASONIC LIQUID CRYSTAL DISPL (21)· patent assignee history
2012–2016Patents assigned to MARUYAMA JUNICHI (19)· patent assignee history
2012–2016Patents assigned to OOISHI YOSHIHISA (8)· patent assignee history
2013–2015Patents assigned to TOSHIMA GOKI (8)· patent assignee history
2014–2015Based in Mobara, JP· patent location history
2016–2019Based in Hyogo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PANASONIC LIQUID CRYSTAL DISPL | 21 | 2012–2019 |
| MARUYAMA JUNICHIself | 19 | 2012–2016 |
| HITACHI DISPLAYS LTD | 8 | 2010–2013 |
| OOISHI YOSHIHISA | 8 | 2012–2016 |
| TOSHIMA GOKI | 8 | 2013–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 24 | 1993–2013 |
| Hyogo, JP | 7 | 2016–2019 |
| Tokyo, JP | 6 | 1998–2017 |
| Mobara, JP | 6 | 2014–2015 |
| Shinagawa-ku, JP | 6 | 2003–2014 |