Inventor
YAMASAWA KAZUHITO
JP17 patents
Patents
17 patentsUS5640516AJun 17, 1997
Faraday rotator
TDK CORP26 citations92
US7133189B2Nov 7, 2006
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
TDK CORP17 citations91
US7242516B2Jul 10, 2007
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
TDK CORP11 citations83
US6775052B2Aug 10, 2004
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
TDK CORP13 citations83
US7517406B2Apr 14, 2009
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
TDK CORP11 citations82
US7333261B2Feb 19, 2008
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
TDK CORP11 citations82
US6853473B2Feb 8, 2005
Faraday rotator and optical device comprising the same, and antireflection film and optical device comprising the same
TDK CORP13 citations79
US6875270B2Apr 5, 2005
Magnetic garnet single-crystal film and method of producing the same, and Faraday rotator comprising the same
TDK CORP10 citations73
US6527973B2Mar 4, 2003
Magnetic garnet material and magnetooptical device using the same
TDK CORP12 citations73
US6309557B1Oct 30, 2001
Magnetic garnet material and faraday rotator using the same
TDK CORP9 citations71
US5662740ASep 2, 1997
Process for producing thin film by epitaxial growth
TDK CORP11 citations71
US5434101AJul 18, 1995
Process for producing thin film by epitaxial growth
TDK CORP12 citations71
US6641751B1Nov 4, 2003
Magnetic garnet single crystal and faraday rotator using the same
TDK CORP9 citations69
US11773508B2Oct 3, 2023
Substrate and light-emitting element
TDK CORP0 citations62
US10458041B2Oct 29, 2019
Alumina substrate
TDK CORP0 citations51
US10337120B2Jul 2, 2019
Alumina substrate
TDK CORP0 citations51
US10294585B2May 21, 2019
Alumina substrate
TDK CORP0 citations51