Inventor
Hitoshi Ohura
Inventor
Kawasaki, JP
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Pprimary
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters30%
H04LTransmission of digital information, e.g. telegraphic communication30%
G09GArrangements or circuits for control of indicating devices using static means to present variable information10%
H02KDynamo-electric machines10%
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 systems10%
H03KPulse technique10%
PatentTitleYear
7,512,116'Gateway for internet telephone'20096,828,752'Driving equipment and semiconductor equipment for alternating-current motor'20046,829,643'Network control apparatus having bandwidth control method selection associated to users utilizing status tables, ranking tables, and total points of user\'s information parameters'20046,807,166'Gateway for internet telephone'20046,534,948'Motor driving circuit, a method for driving a motor, and a semiconductor integrated circuit device'20036,040,827'Driver circuit, driver integrated circuit, and display device and electronic device using the driver circuit and driver integrated circuit'20005,818,281'Semiconductor circuit having turn-on prevention capability of switching semiconductor device during off cycle thereof by undesired transient voltages'19984,562,397'Squirrel-cage induction motor'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2004Patents assigned to HITACHI LTD (5)· patent assignee history
1985–1998Based in Hitachi, JP· patent location history
1998–2003Patents assigned to HITACHI HARAMACHI ELECTRONICS (3)· patent assignee history
2000–2004Based in Mito, JP· patent location history
2004–2009Patents assigned to FUJITSU LTD (3)· patent assignee history
2004–2009Based in Kawasaki, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 5 | 1985–2004 |
| FUJITSU LTD | 3 | 2004–2009 |
| HITACHI HARAMACHI ELECTRONICS | 3 | 1998–2003 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 3 | 2004–2009 |
| Mito, JP | 3 | 2000–2004 |
| Hitachi, JP | 2 | 1985–1998 |