Shoichi Hanatani

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Kodaira, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for testing a DC coupled optical receiver
- Patent number 5,548,399
- Issue date Aug 20, 1996
- Hitachi, Ltd.
- Atsushi Takai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Superlattice avalanche photodiode (APD)
- Patent number 5,543,629
- Issue date Aug 6, 1996
- Hitachi, Ltd.
- Hitoshi Nakamura
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical demultiplexing system with optical amplifiers
- Patent number 5,422,968
- Issue date Jun 6, 1995
- Hitachi, Ltd.
- Shoichi Hanatani
- G02 - OPTICS
Information Patent Grant
Semiconductor optical device having a heterointerface therein
- Patent number 5,324,959
- Issue date Jun 28, 1994
- Hitachi, Ltd.
- Hitoshi Nakamura
- B82 - NANO-TECHNOLOGY