Inventor
Shinji Iwatsuka
Inventor
Tokyo, JP
Overview
Patents· 30 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 therein51%
G02BOptical elements, systems or apparatus33%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
G01RMeasuring electric variables4%
H01FMagnets4%
PatentTitleYear
11,086,149Electro-optic device202111,003,044Electro-optic device202111,003,043Optical modulator202110,989,980Optical modulator202110,955,722Optical modulator202110,649,246Dielectric thin film-applied substrate and optical modulation element using the same202010,591,801Optical modulator202010,585,328Optical waveguide element and optical modulator using the same202010,359,684Optical waveguide element and optical modulator using the same201910,203,583Optical waveguide element and optical modulator using the same20199,939,709Optical waveguide element and optical modulator using the same20189,244,296'Optical modulator'20167,444,040'Magneto-optical component'20087,072,111'Reflection-type optical device'20067,002,732'Magneto-optical devices'20066,833,941'Magneto-optic optical device'20046,747,782'Faraday rotator and optical attenuator'20046,621,630'Composite optical element, optical isolator, optical attenuator and processes for producing them'20036,359,733'Composite optical element, optical isolator, optical circulator, optical switch and processes for producing them'20026,309,557'Magnetic garnet material and faraday rotator using the same'20016,130,778'Composite optical element, optical isolator, optical circulator, optical switch and process for producing them'20005,841,922'Optical fiber terminal with optical isolator and semiconductor laser module using the same'19985,691,845'Optical isolator, optical isolator with fiber and method for making the same'19975,640,516'Faraday rotator'19975,619,367'Apparatus and method for measuring magnetic fields employing magneto-optic element'19975,500,915'Optical fiber terminal pitted with optical isolator'19965,499,307'Optical isolator and polarization splitter therefor'19965,477,376'Optical attenuators and optical modulators employing magneto-optic element'19955,359,689'Optical fiber terminal fitted with optical isolator and method of assembling the same'19945,245,471'Polarizers, polarizer-equipped optical elements, and method of manufacturing the same'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–2021Patents assigned to TDK CORP (30)· patent assignee history
1993–2021Based in Tokyo, JP· patent location history
1994Based in Shirasato, JP· patent location history
1996–1997Based in Oamishirasato, JP· patent location history
2000–2002Based in Honjo, JP· patent location history
2004Based in Chuo-ku, JP· patent location history
2021Patents assigned to FUJITSU OPTICAL COMPONENTS LTD (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TDK CORP | 30 | 1993–2021 |
| FUJITSU OPTICAL COMPONENTS LTD | 4 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 23 | 1993–2021 |
| Oamishirasato, JP | 3 | 1996–1997 |
| Honjo, JP | 2 | 2000–2002 |
| Chuo-ku, JP | 1 | 2004 |
| Shirasato, JP | 1 | 1994 |