Inventor · disambiguated record
Kazushi Shirai
Also filed as: SHIRAI KAZUSHI
17 granted patents·273 citations·filing 1989–2003
94Inventor score
Top patents by PatentIndex Score
17 records- 0182US5278853AOptical isolatorMITSUBISHI GAS CHEMICAL CO·Filed 1992·Granted Jan 11, 1994·62 cites·4 claims
- 0281US5345329APolarization-independent optical isolatorMITSUBISHI GAS CHEMICAL CO·Filed 1993·Granted Sep 6, 1994·46 cites·6 claims
- 0365US5493222AReflection type magnetooptic sensor head with faraday rotatorMITSUBISHI GAS CHEMICAL CO·Filed 1993·Granted Feb 20, 1996·24 cites·3 claims
- 0458US5920420AFaraday rotator with antireflection filmMITSUBISHI GAS CHEMICAL CO·Filed 1997·Granted Jul 6, 1999·25 cites·5 claims
- 0557US5898516AFaraday rotator having a rectangular shaped hysteresisMITSUBISHI GAS CHEMICAL CO·Filed 1997·Granted Apr 27, 1999·19 cites·5 claims
- 0656US5512193ALow saturated magnetic field bismuth-substituted rare earth iron garnet single crystal and its useMITSUBISHI GAS CHEMICAL CO·Filed 1995·Granted Apr 30, 1996·13 cites·13 claims
- 0753US4932760AMagneto-optic garnetMITSUBISHI GAS CHEMICAL CO·Filed 1989·Granted Jun 12, 1990·13 cites·5 claims
- 0849US5463316AMagnetooptic sensor headMITSUBISHI GAS CHEMICAL CO·Filed 1993·Granted Oct 31, 1995·13 cites·4 claims
- 0948US6673146B2Method of manufacturing a magnet-free faraday rotatorPHOTOCRYSTAL INC·Filed 2002·Granted Jan 6, 2004·1 cites·5 claims
- 1048US5535046AFaraday rotatorMITSUBISHI GAS CHEMICAL CO·Filed 1994·Granted Jul 9, 1996·13 cites·6 claims
- 1146US6816300B2Optical apparatusPHOTOCRYSTAL INC·Filed 2003·Granted Nov 9, 2004·6 cites·5 claims
- 1244US6128423AReflection type magneto-optic sensorMITSUBISHI GAS CHEMICAL CO·Filed 1998·Granted Oct 3, 2000·11 cites·9 claims
- 1343US5565131ABismuth-substituted rare earth iron garnet single crystalMITSUBISHI GAS CHEMICAL CO·Filed 1995·Granted Oct 15, 1996·8 cites·10 claims
- 1441US6411641B1Faraday rotator for use with high energy lasersMITSUBISHI GAS CHEMICAL CO·Filed 1999·Granted Jun 25, 2002·8 cites·5 claims
- 1538US5683506AMethod of manufacturing a bismuth-substituted rare earth iron garnet single crystal film for short wavelengthMITSUBISHI GAS CHEMICAL CO·Filed 1996·Granted Nov 4, 1997·4 cites·9 claims
- 1635US5925474ABismuth-substituted rare earth iron garnet single crystal filmMITSUBISHI GAS CHEMICAL CO·Filed 1997·Granted Jul 20, 1999·3 cites·7 claims
- 1733US6031654ALow magnet-saturation bismuth-substituted rare-earth iron garnet single crystal filmMITSUBISHI GAS CHEMICAL CO·Filed 1998·Granted Feb 29, 2000·4 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when Kazushi Shirai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →