Keisuke Kojima

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Amagasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical logic element with short switching time
- Patent number 4,999,688
- Issue date Mar 12, 1991
- Mitsubishi Denki Kabushiki Kaisha
- Kunihiko Hara
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Semiconductor laser device
- Patent number 4,888,783
- Issue date Dec 19, 1989
- Mitsubishi Denki Kabushiki Kaisha
- Keisuke Kojima
- G02 - OPTICS
Information Patent Grant
Surface-emitting semiconductor laser device
- Patent number 4,847,844
- Issue date Jul 11, 1989
- Mitsubishi Denki Kabushiki Kaisha
- Susumu Noda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor laser device
- Patent number 4,817,110
- Issue date Mar 28, 1989
- Mitsubishi Denki Kabushiki Kaisha
- Yasunori Tokuda
- B82 - NANO-TECHNOLOGY