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Ryo Nishimaki
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Digital watermark system, digital watermark method and program
Patent number
12,120,231
Issue date
Oct 15, 2024
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Identity-based hash proof system configuration apparatus, identity-...
Patent number
11,658,806
Issue date
May 23, 2023
Nippon Telegraph and Telephone Corporation
Takashi Yamakawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Conversion key generation apparatus, encrypted text conversion appa...
Patent number
11,450,238
Issue date
Sep 20, 2022
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Grant
Communication terminal, server apparatus, and program
Patent number
11,336,441
Issue date
May 17, 2022
Nippon Telegraph and Telephone Corporation
Yuki Okano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Encrypted message search method, message transmission/reception sys...
Patent number
11,223,472
Issue date
Jan 11, 2022
Nippon Telegraph and Telephone Corporation
Yuki Okano
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Communication terminals, server devices, and programs
Patent number
11,190,499
Issue date
Nov 30, 2021
Nippon Telegraph and Telephone Corporation
Yuki Okano
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret sharing system, sharing apparatus, share management apparatu...
Patent number
8,964,988
Issue date
Feb 24, 2015
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Information generation apparatus, method, program, and recording me...
Patent number
8,619,980
Issue date
Dec 31, 2013
Nippon Telegraph and Telephone Corporation
Koutarou Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Secret sharing system, sharing apparatus, share management apparatu...
Patent number
8,549,290
Issue date
Oct 1, 2013
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
DIGITAL WATERMARK SYSTEM, DIGITAL WATERMARK METHOD AND PROGRAM
Publication number
20220407698
Publication date
Dec 22, 2022
Nippon Telegraph and Telephone Corporation
Ryo NISHIMAKI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
CONVERSION KEY GENERATION APPARATUS, ENCRYPTED TEXT CONVERSION APPA...
Publication number
20210233431
Publication date
Jul 29, 2021
Nippon Telegraph and Telephone Corporation
Ryo NISHIMAKI
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information
Patent Application
COMMUNICATION TERMINAL, SERVER APPARATUS, AND PROGRAM
Publication number
20210184844
Publication date
Jun 17, 2021
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Yuki OKANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
IDENTITY-BASED HASH PROOF SYSTEM CONFIGURATION APPARATUS, IDENTITY-...
Publication number
20210167945
Publication date
Jun 3, 2021
Nippon Telegraph and Telephone Corporation
Takashi YAMAKAWA
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
COMMUNICATION TERMINALS, SERVER DEVICES, AND PROGRAMS
Publication number
20190238523
Publication date
Aug 1, 2019
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Yuki OKANO
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
ENCRYPTED MESSAGE SEARCH METHOD, MESSAGE TRANSMISSION/RECEPTION SY...
Publication number
20190215158
Publication date
Jul 11, 2019
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Yuki OKANO
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
SECRET SHARING SYSTEM, SHARING APPARATUS, SHARE MANAGEMENT APPARATU...
Publication number
20130114815
Publication date
May 9, 2013
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SECRET SHARING SYSTEM, SHARING APPARATUS, SHARE MANAGEMENT APPARATU...
Publication number
20120030464
Publication date
Feb 2, 2012
Nippon Telegraph and Telephone Corporation
Ryo Nishimaki
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
INFORMATION GENERATION APPARATUS,METHOD, PROGRAM, AND RECORDING MED...
Publication number
20120027206
Publication date
Feb 2, 2012
NIPPON TELEGRAPH AND TELEPHONE CORP.
Koutarou Suzuki
H04 - ELECTRIC COMMUNICATION TECHNIQUE