Inventor
Yohei Shirakawa
Inventor
Hitachi, JP
Overview
Patents· 26 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Rprimary
H01RElectrically-conductive connections22%
H04BTransmission12%
H04LTransmission of digital information, e.g. telegraphic communication12%
H01PWaveguides10%
H01QAntennas, i.e. radio aerials10%
G01RMeasuring electric variables8%
H01BCables6%
H05KPrinted circuits6%
G08BSignalling systems, e.g. personal calling systems4%
H01GCapacitors4%
PatentTitleYear
11,009,560Method for testing multicore cable, method for manufacturing multicore cable assembly, and multicore cable test device202110,992,068Method for manufacturing solder with ground bar and coaxial cable array202110,962,607Method for testing multicore cable, method for manufacturing multicore cable assembly, and multicore cable test device202110,895,607Method for testing multicore cable, method for manufacturing multicore cable assembly, and multicore cable test device202110,270,676Signal detecting device201910,149,378Communication device201810,075,211Crosstalk reduction method and repeater20189,979,555Communication monitoring device20189,887,499'Communication cable connector and communication cable with connector'20189,842,482'Signal detecting device'20179,826,631'Repeater'20179,769,039'Communication visualization device'20179,729,354'Cable signal detector'20179,712,372'Cable signal detector'20179,692,683'Communication visualization system'20179,608,393'Repeater with two connectors mounted on two opposite sides of a circuit board'20179,583,894'Cable signal detector and connectorized communication cable'20178,810,332'Electromagnetic coupler and information communication device with same mounted thereon'20148,803,629'Electromagnetic coupler and information communication device including same'20148,803,754'Antenna and wireless device having same'20148,742,866'Electromagnetic coupler and information communication device including same'20148,700,375'Electromagnetic coupler, wireless terminal including same, and method for designing electromagnetic couplers'20148,633,783'Electromagnetic coupler and communication apparatus using the same'20147,817,094'Antenna, and wireless module, wireless unit and wireless apparatus having the antenna'20107,714,787'Antenna, and wireless module, wireless unit and wireless apparatus having the antenna'20107,602,346'Antenna module, radio device and mobile radio terminal'2009Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2009–2014Patents assigned to HITACHI CABLE (4)· patent assignee history
2009–2019Based in Hitachi, JP· patent location history
2014–2021Patents assigned to HITACHI METALS LTD (22)· patent assignee history
2014Patents assigned to SHIRAKAWA YOHEI (6)· patent assignee history
2014Patents assigned to TERAKI NAOTO (4)· patent assignee history
2014Patents assigned to FUJIMOTO KAZUHIRO (3)· patent assignee history
2021Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI METALS LTD | 22 | 2014–2021 |
| SHIRAKAWA YOHEIself | 6 | 2014 |
| HITACHI CABLE | 4 | 2009–2014 |
| TERAKI NAOTO | 4 | 2014 |
| FUJIMOTO KAZUHIRO | 3 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 22 | 2009–2019 |
| Tokyo, JP | 4 | 2021 |