Junko Akagi

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ultra high frequency radio communication apparatus
- Patent number 5,898,909
- Issue date Apr 27, 1999
- Kabushiki Kaisha Toshiba
- Kunio Yoshihara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Heterojunction bipolar transistor
- Patent number 5,332,912
- Issue date Jul 26, 1994
- Kabushiki Kaisha Toshiba
- Tetsuro Nozu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-frequency power amplifier having heterojunction bipolar transi...
- Patent number 4,839,612
- Issue date Jun 13, 1989
- Kabushiki Kaisha Toshiba
- Junko Akagi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Heterojunction bipolar integrated circuit
- Patent number 4,739,379
- Issue date Apr 19, 1988
- Kabushiki Kaisha Toshiba
- Junko Akagi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for manufacturing power switching devices
- Patent number 4,370,180
- Issue date Jan 25, 1983
- Tokyo Shibaura Denki Kabushiki Kaisha
- Makoto Azuma
- H01 - BASIC ELECTRIC ELEMENTS