Yoshio Yoshioka

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus for reducing, enlarging and projecting image information
- Patent number 5,260,728
- Issue date Nov 9, 1993
- Hitachi, Ltd.
- Yoshio Yoshioka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Gas-insulated circuit breaker
- Patent number 4,667,072
- Issue date May 19, 1987
- Hitachi, Ltd.
- Fumihiro Endo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fuel cell
- Patent number 4,588,660
- Issue date May 13, 1986
- Hitachi, Ltd.
- Toshio Shimizu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-voltage DC circuit breaker apparatus
- Patent number 4,578,730
- Issue date Mar 25, 1986
- Hitachi, Ltd.
- Shunji Tokuyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
SF.sub.6 Gas arc extinguishing electric apparatus and process for p...
- Patent number 4,562,322
- Issue date Dec 31, 1985
- Hitachi, Ltd.
- Motoo Yamaguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electromagnetic puffer type gas circuit breaker
- Patent number 4,211,903
- Issue date Jul 8, 1980
- Hitachi, Ltd.
- Masanori Tsukushi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Puffer-type gas-blast circuit breaker
- Patent number 4,182,942
- Issue date Jan 8, 1980
- Hitachi, Ltd.
- Osamu Koyanagi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Puffer-type gas-blast circuit breaker
- Patent number 4,160,888
- Issue date Jul 10, 1979
- Hitachi, Ltd.
- Ken-ichi Natsui
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Puffer type gas circuit breaker
- Patent number 4,132,876
- Issue date Jan 2, 1979
- Hitachi, Ltd.
- Minoru Sato
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic puffer type gas circuit breaker
- Patent number 4,105,879
- Issue date Aug 8, 1978
- Hitachi, Ltd.
- Masanori Tsukushi
- H01 - BASIC ELECTRIC ELEMENTS

Yoshio Yoshioka

Person

Patents Grantslast 30 patents

Apparatus for reducing, enlarging and projecting image information

Gas-insulated circuit breaker

Fuel cell

High-voltage DC circuit breaker apparatus

SF.sub.6 Gas arc extinguishing electric apparatus and process for p...

Electromagnetic puffer type gas circuit breaker

Puffer-type gas-blast circuit breaker

Puffer-type gas-blast circuit breaker

Puffer type gas circuit breaker

Magnetic puffer type gas circuit breaker