Tatsushi Nakahara

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
1 x N optical switch
- Patent number 12,117,712
- Issue date Oct 15, 2024
- Nippon Telegraph and Telephone Corporation
- Yusuke Muranaka
- G02 - OPTICS
Information Patent Grant
Optical switch
- Patent number 12,111,559
- Issue date Oct 8, 2024
- Nippon Telegraph and Telephone Corporation
- Yusuke Muranaka
- G02 - OPTICS
Information Patent Grant
Optical switch element
- Patent number 11,921,397
- Issue date Mar 5, 2024
- Nippon Telegraph and Telephone Corporation
- Yusuke Muranaka
- G02 - OPTICS
Information Patent Grant
Optical signal processing method and optical signal processing appa...
- Patent number 6,535,661
- Issue date Mar 18, 2003
- Nippon Telegraph and Telephone Corporation
- Ryo Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
1 x N Optical Switch
- Publication number 20230194952
- Publication date Jun 22, 2023
- Nippon Telegraph and Telephone Corporation
- Yusuke Muranaka
- G02 - OPTICS
Information Patent Application
Optical Switch
- Publication number 20230095427
- Publication date Mar 30, 2023
- Nippon Telegraph and Telephone Corporation
- Yusuke Muranaka
- G02 - OPTICS
Information Patent Application
Optical Switch Element
- Publication number 20220091472
- Publication date Mar 24, 2022
- Yusuke Muranaka
- G02 - OPTICS
Information Patent Application
NxN Optical Switch
- Publication number 20200064556
- Publication date Feb 27, 2020
- Nippon Telegraph and Telephone Corporation
- Yusuke Muranaka
- G02 - OPTICS
Information Patent Application
Optical signal processing method and optical signal processing appa...
- Publication number 20020012492
- Publication date Jan 31, 2002
- Ryo Takahashi
- G02 - OPTICS