Inventor
Kazuhito Yamasawa
Inventor
Tokyo, JP
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C30Bprimary
C30BSingle-crystal growth29%
H01FMagnets29%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein23%
H01LSemiconductor devices9%
H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h109%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%
PatentTitleYear
10,458,041Alumina substrate201910,337,120Alumina substrate201910,294,585Alumina substrate20197,517,406'Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same and crucible for producing the same'20097,333,261'Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same crucible for producing the same'20087,242,516'Hard magnetic garnet material, faraday rotator, optical device, optical communication system, method of manufacturing faraday rotator and method of manufacturing bismuth-substituted rare earth iron garnet single crystal'20077,133,189'Magnetic garnet material, faraday rotator, optical device, bismuth-substituted rare earth-iron-garnet single-crystal film and method for producing the same and crucible for producing the same'20066,875,270'Magnetic garnet single-crystal film and method of producing the same, and Faraday rotator comprising the same'20056,853,473'Faraday rotator and optical device comprising the same, and antireflection film and optical device comprising the same'20056,775,052'HARD MAGNETIC GARNET MATERIAL, FARADAY ROTATOR, OPTICAL DEVICE, OPTICAL COMMUNICATION SYSTEM, METHOD OF MANUFACTURING FARADAY ROTATOR AND METHOD OF MANUFACTURING BISMUTH-SUBSTITUTED RARE EARTH IRON GARNET SINGLE CRYSTAL'20046,641,751'Magnetic garnet single crystal and faraday rotator using the same'20036,527,973'Magnetic garnet material and magnetooptical device using the same'20036,309,557'Magnetic garnet material and faraday rotator using the same'20015,662,740'Process for producing thin film by epitaxial growth'19975,640,516'Faraday rotator'19975,434,101'Process for producing thin film by epitaxial growth'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–2019Patents assigned to TDK CORP (16)· patent assignee history
1995–2019Based in Tokyo, JP· patent location history
2003Based in Nihonbashi, JP· patent location history
2005Based in Chuo-ku, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TDK CORP | 16 | 1995–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 13 | 1995–2019 |
| Nihonbashi, JP | 2 | 2003 |
| Chuo-ku, JP | 1 | 2005 |