Inventor
HASHINAGA TATSUYA
JP20 patents
Patents
20 patentsUS5406212AApr 11, 1995
Burn-in apparatus and method for self-heating semiconductor devices having built-in temperature sensors
SUMITOMO ELECTRIC INDUSTRIES123 citations98
US5414370AMay 9, 1995
Burn-in apparatus and method which individually controls the temperature of a plurality of semiconductor devices
SUMITOMO ELECTRIC INDUSTRIES103 citations96
US5359285AOct 25, 1994
Method and apparatus for varying temperature and electronic load conditions of a semiconductor device in a burn-in test chamber while performing a burn-in test
SUMITOMO ELECTRIC INDUSTRIES58 citations96
US5327075AJul 5, 1994
Burn-in apparatus and method for semiconductor devices
SUMITOMO ELECTRIC INDUSTRIES38 citations92
US5754402AMay 19, 1998
Power amplifying module
SUMITOMO ELECTRIC INDUSTRIES36 citations90
US5835352ANov 10, 1998
Power amplifying module
SUMITOMO ELECTRIC INDUSTRIES19 citations82
US5457401AOct 10, 1995
Semiconductor device testing apparatus
SUMITOMO ELECTRIC INDUSTRIES12 citations73
US5410261AApr 25, 1995
Semiconductor device testing apparatus
SUMITOMO ELECTRIC INDUSTRIES15 citations73
US6333523B1Dec 25, 2001
Field-effect transistor
SUMITOMO ELECTRIC INDUSTRIES12 citations72
US12556141B2Feb 17, 2026
High-frequency device and Doherty amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations62
US12176860B2Dec 24, 2024
High frequency amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations62
US12051998B2Jul 30, 2024
Amplifier circuit
SUMITOMO ELECTRIC INDUSTRIES0 citations62
US11916519B2Feb 27, 2024
High frequency amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations62
US5245276ASep 14, 1993
Semiconductor device storage jig
SUMITOMO ELECTRIC INDUSTRIES3 citations62
US5757251AMay 26, 1998
Electronic component contained in a metal package
SUMITOMO ELECTRIC INDUSTRIES6 citations60
US11444575B2Sep 13, 2022
Bias circuit
SUMITOMO ELECTRIC INDUSTRIES0 citations55
US10924064B2Feb 16, 2021
Bias circuit
SUMITOMO ELECTRIC INDUSTRIES0 citations55
US12334874B2Jun 17, 2025
High frequency amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations51
US12199572B2Jan 14, 2025
High-frequency amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations51
US11152900B2Oct 19, 2021
Multistage amplifier
SUMITOMO ELECTRIC INDUSTRIES0 citations51