Inventor
Ryuichi Hirayama
Inventor
Musashimurayama, JP
Overview
Patents· 8 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 information55%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein27%
G11BInformation storage based on relative movement between record carrier and transducer9%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems9%
PatentTitleYear
10,649,249Liquid crystal driving apparatus and liquid crystal driving method20208,581,893'Liquid crystal display apparatus'20138,330,700'Driving circuit and driving method of active matrix display device, and active matrix display device'20128,294,655'Display drive device and display apparatus having same'20128,159,435'Active matrix type display device which compensates for an electrical potential variation caused by inter-pixel parasitic capacitance between two adjacent pixels connected to different signal lines'20127,511,691'Display drive device and display apparatus having same'20097,365,592'Power supply circuit'20085,089,918'Magnetic recording and/or reproducing apparatus having single head with two gaps and providing different lead angles in different operating states'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2013Patents assigned to CASIO COMPUTER CO LTD (7)· patent assignee history
1992Based in Tachikawa, JP· patent location history
2008–2012Based in Musashimurayama, JP· patent location history
2012–2013Patents assigned to HIRAYAMA RYUICHI (4)· patent assignee history
2012Patents assigned to INAGAKI NAOKI (1)· patent assignee history
2012Patents assigned to KASHIYAMA SHUNJI (1)· patent assignee history
2013Based in Tokyo, JP· patent location history
2020Patents assigned to TOPPAN PRINTING CO LTD (1)· patent assignee history
2020Based in Hino, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CASIO COMPUTER CO LTD | 7 | 1992–2013 |
| HIRAYAMA RYUICHIself | 4 | 2012–2013 |
| INAGAKI NAOKI | 1 | 2012 |
| KASHIYAMA SHUNJI | 1 | 2012 |
| TOPPAN PRINTING CO LTD | 1 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Musashimurayama, JP | 5 | 2008–2012 |
| Hino, JP | 1 | 2020 |
| Tokyo, JP | 1 | 2013 |
| Tachikawa, JP | 1 | 1992 |