Yorito Jifuku

Follow

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Inverter apparatus and uinterruptible power supply using the same
- Patent number 5,446,645
- Issue date Aug 29, 1995
- Hitachi, Ltd.
- Hidefumi Shirahama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Large capacity variable speed PWM spatial vector type sub-harmonic...
- Patent number 5,298,848
- Issue date Mar 29, 1994
- Hitachi, Ltd.
- Shigeta Ueda
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply apparatus for resistance welder including means for pr...
- Patent number 4,306,138
- Issue date Dec 15, 1981
- Hitachi, Ltd.
- Norikazu Tokunaga
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR