Inventor
Junichiro Ichikawa
Inventor
Tokyo, JP
Overview
Patents· 57 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein69%
G02BOptical elements, systems or apparatus17%
Y10TTechnical subjects covered by former us classification5%
H04BTransmission4%
H05KPrinted circuits3%
H01PWaveguides1%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light1%
PatentTitleYear
10,502,982Optical modulator201910,502,988Optical modulator module201910,498,457Optical carrier-suppressed signal generator201910,466,513Optical waveguide device201910,401,658Optical modulator and optical switch201910,365,506Optical modulator201910,365,534Optical waveguide device201910,338,414Optical modulator module201910,088,734Waveguide-type optical element201810,067,403Optical modulator and optical switch20189,946,100Waveguide type optical element20189,746,741'Optical modulator'20179,599,843'Optical modulator'20179,551,887'Optical modulator'20179,519,200'Optical control device'20169,348,156'Optical waveguide element and method for manufacturing optical waveguide element'20169,235,066'Optical modulator'20169,057,893'Light control element'20159,002,165'Optical waveguide device'20158,983,239'Optical control element having a plurality of optical control portions'20158,867,042'Method for evaluating characteristic of optical modulator having mach-zehnder interferometer'20148,755,641'Optical modulator'20148,737,773'Optical control element'20148,669,121'Method for forming polarization reversal'20148,644,647'Optical control device'20148,600,197'Optical control device'20138,524,509'Method for forming polarization reversal'20138,526,768'Light control device'20138,396,334'Optical waveguide device'20138,391,651'Optical waveguide device'20138,380,015'Optical control device'20138,315,496'Optical element'20128,293,543'Method for forming polarization reversal'20128,265,443'Optical waveguide device'20128,193,004'Method for forming ferroelectric spontaneous polarization reversal'20127,985,294'Optical device and method of manufacturing the same'20117,925,123'Optical control device'20117,912,326'Optical control device'20117,899,338'Method and device for controlling bias of optical modulator'20117,873,244'Light control device'20117,869,668'Method for generating carrier residual signal and its device'20117,831,122'Optical control device and manufacturing method thereof'20107,768,696'THZ wave generator'20107,764,422'THz wave generation device'20107,689,067'Nested modulator'20107,444,039'Optical modulator'20087,397,974'Optical modulator'20087,362,924'Optical modulator'20087,310,453'Optical modulator'20077,260,280'Optical device'20077,174,059'Optical device'20077,009,758'Light control element'20066,539,153'Light limiter'20036,233,385'Light limiter'20016,218,658'Optical fuse'20016,134,372'Light intensity attenuator and attenuating method'20005,526,448'Optical waveguide modulator having a reduced D.C. drift'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2003Based in Funabashi, JP· patent location history
2000–2019Patents assigned to SUMITOMO OSAKA CEMENT CO LTD (52)· patent assignee history
2001–2019Based in Tokyo, JP· patent location history
2007–2014Patents assigned to NAT INST FOR MATERIALS SCIENCE (8)· patent assignee history
2010–2019Based in Chiyoda-ku, JP· patent location history
2012–2015Patents assigned to ICHIKAWA JUNICHIRO (18)· patent assignee history
2012–2014Patents assigned to OIKAWA SATOSHI (9)· patent assignee history
2012–2014Patents assigned to YAMAMOTO FUTOSHI (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO OSAKA CEMENT CO LTD | 52 | 2000–2019 |
| ICHIKAWA JUNICHIROself | 18 | 2012–2015 |
| OIKAWA SATOSHI | 9 | 2012–2014 |
| NAT INST FOR MATERIALS SCIENCE | 8 | 2007–2014 |
| YAMAMOTO FUTOSHI | 5 | 2012–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 35 | 2001–2019 |
| Chiyoda-ku, JP | 18 | 2010–2019 |
| Funabashi, JP | 4 | 1996–2003 |