Ririka TAKAHASHI

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Quantum cryptographic device, quantum cryptographic communication f...
- Patent number 12,198,167
- Issue date Jan 14, 2025
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Application-key management system, application-key management devic...
- Patent number 11,764,952
- Issue date Sep 19, 2023
- Kabushiki Kaisha Toshiba
- Kazuaki Doi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Key generation device, key generation method, and computer program...
- Patent number 11,115,198
- Issue date Sep 7, 2021
- Kabushiki Kaisha Toshiba
- Ririka Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device, communication system, and communication method
- Patent number 10,439,807
- Issue date Oct 8, 2019
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum key distribution device, quantum key distribution system, a...
- Patent number 10,348,492
- Issue date Jul 9, 2019
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device, quantum key distribution system, quantum key...
- Patent number 10,341,097
- Issue date Jul 2, 2019
- Kabushiki Kaisha Toshiba
- Ririka Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device, communication system, and computer program pr...
- Patent number 10,223,182
- Issue date Mar 5, 2019
- Kabushiki Kaisha Toshiba
- Ririka Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device, communication method, computer program produc...
- Patent number 9,928,370
- Issue date Mar 27, 2018
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum key distribution device, quantum key distribution system, a...
- Patent number 9,768,954
- Issue date Sep 19, 2017
- Kabushiki Kaisha Toshiba
- Ririka Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device, communication system, communication method, a...
- Patent number 9,509,589
- Issue date Nov 29, 2016
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication apparatus, computer program product, and communicatio...
- Patent number 9,455,827
- Issue date Sep 27, 2016
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication device, communication system, and computer program pr...
- Patent number 9,450,929
- Issue date Sep 20, 2016
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Device, method, and system for encrypted communication by using enc...
- Patent number 9,356,780
- Issue date May 31, 2016
- Kabushiki Kaisha Toshiba
- Yoshimichi Tanizawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quantum key distribution device, quantum key distribution system, a...
- Patent number 9,350,542
- Issue date May 24, 2016
- Kabushiki Kaisha Toshiba
- Ririka Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
QUANTUM CRYPTOGRAPHIC COMMUNICATION CONTROL DEVICE, QUANTUM CRYPTOG...
- Publication number 20240178995
- Publication date May 30, 2024
- Kabushiki Kaisha Toshiba
- Kanata KUSUSE
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
KEY MANAGEMENT DEVICE, QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, A...
- Publication number 20230308264
- Publication date Sep 28, 2023
- Kabushiki Kaisha Toshiba
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
KEY MANAGEMENT DEVICE, QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, A...
- Publication number 20230299941
- Publication date Sep 21, 2023
- Kabushiki Kaisha Toshiba
- Yu YU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
KEY MANAGEMENT DEVICE, QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, A...
- Publication number 20230299952
- Publication date Sep 21, 2023
- Kabushiki Kaisha Toshiba
- Yu YU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, QUANTUM CRYPTOGRAPHY COM...
- Publication number 20230084881
- Publication date Mar 16, 2023
- Kabushiki Kaisha Toshiba
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPLICATION-KEY MANAGEMENT SYSTEM, APPLICATION-KEY MANAGEMENT DEVIC...
- Publication number 20210409202
- Publication date Dec 30, 2021
- Kabushiki Kaisha Toshiba
- Kazuaki DOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM CRYPTOGRAPHIC DEVICE, QUANTUM CRYPTOGRAPHIC COMMUNICATION F...
- Publication number 20210328784
- Publication date Oct 21, 2021
- Kabushiki Kaisha Toshiba
- Kazuaki DOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
KEY GENERATION DEVICE, KEY GENERATION METHOD, AND COMPUTER PROGRAM...
- Publication number 20200092089
- Publication date Mar 19, 2020
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
KEY SHARING DEVICE, KEY SHARING SYSTEM, KEY SHARING METHOD, AND COM...
- Publication number 20180255039
- Publication date Sep 6, 2018
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD
- Publication number 20180054306
- Publication date Feb 22, 2018
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi TANIZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, QUANTUM KEY...
- Publication number 20170264434
- Publication date Sep 14, 2017
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...
- Publication number 20160218868
- Publication date Jul 28, 2016
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM PR...
- Publication number 20160197723
- Publication date Jul 7, 2016
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...
- Publication number 20160142203
- Publication date May 19, 2016
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi TANIZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...
- Publication number 20150215122
- Publication date Jul 30, 2015
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION APPARATUS, COMPUTER PROGRAM PRODUCT, AND COMMUNICATIO...
- Publication number 20150036825
- Publication date Feb 5, 2015
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi TANIZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION METHOD, COMPUTER PROGRAM PRODUC...
- Publication number 20140365786
- Publication date Dec 11, 2014
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi Tanizawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM
- Publication number 20140365774
- Publication date Dec 11, 2014
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi TANIZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, A...
- Publication number 20140289520
- Publication date Sep 25, 2014
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi TANIZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM PR...
- Publication number 20140143443
- Publication date May 22, 2014
- KABUSHIKI KAISHA TOSHIBA
- Ririka TAKAHASHI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM PR...
- Publication number 20140143867
- Publication date May 22, 2014
- KABUSHIKI KAISHA TOSHIBA
- Yoshimichi TANIZAWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Ririka TAKAHASHI

Person

Patents Grantslast 30 patents

Quantum cryptographic device, quantum cryptographic communication f...

Application-key management system, application-key management devic...

Key generation device, key generation method, and computer program...

Communication device, communication system, and communication method

Quantum key distribution device, quantum key distribution system, a...

Communication device, quantum key distribution system, quantum key...

Communication device, communication system, and computer program pr...

Communication device, communication method, computer program produc...

Quantum key distribution device, quantum key distribution system, a...

Communication device, communication system, communication method, a...

Communication apparatus, computer program product, and communicatio...

Communication device, communication system, and computer program pr...

Device, method, and system for encrypted communication by using enc...

Quantum key distribution device, quantum key distribution system, a...

Patents Applicationslast 30 patents

QUANTUM CRYPTOGRAPHIC COMMUNICATION CONTROL DEVICE, QUANTUM CRYPTOG...

KEY MANAGEMENT DEVICE, QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, A...

KEY MANAGEMENT DEVICE, QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, A...

KEY MANAGEMENT DEVICE, QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, A...

QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, QUANTUM CRYPTOGRAPHY COM...

APPLICATION-KEY MANAGEMENT SYSTEM, APPLICATION-KEY MANAGEMENT DEVIC...

QUANTUM CRYPTOGRAPHIC DEVICE, QUANTUM CRYPTOGRAPHIC COMMUNICATION F...

KEY GENERATION DEVICE, KEY GENERATION METHOD, AND COMPUTER PROGRAM...

KEY SHARING DEVICE, KEY SHARING SYSTEM, KEY SHARING METHOD, AND COM...

COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

COMMUNICATION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, QUANTUM KEY...

QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...

COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM PR...

QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...

QUANTUM KEY DISTRIBUTION DEVICE, QUANTUM KEY DISTRIBUTION SYSTEM, A...

COMMUNICATION APPARATUS, COMPUTER PROGRAM PRODUCT, AND COMMUNICATIO...

COMMUNICATION DEVICE, COMMUNICATION METHOD, COMPUTER PROGRAM PRODUC...

COMMUNICATION DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM

COMMUNICATION DEVICE, COMMUNICATION SYSTEM, COMMUNICATION METHOD, A...

COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM PR...

COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMPUTER PROGRAM PR...