Ryoichi Sasaki

Person

Fujisawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Memory diagnosis apparatus and memory diagnosis program
- Patent number 10,438,679
- Issue date Oct 8, 2019
- Mitsubishi Electric Corporation
- Ryoya Ichioka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital signing method
- Patent number 7,770,009
- Issue date Aug 3, 2010
- Hitachi, Ltd.
- Kunihiko Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for recovering the validity of cryptographically...
- Patent number 7,694,126
- Issue date Apr 6, 2010
- Hitachi, Ltd.
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronic document authenticity assurance method and electronic do...
- Patent number 7,526,645
- Issue date Apr 28, 2009
- Hitachi, Ltd.
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital signing method
- Patent number 7,305,558
- Issue date Dec 4, 2007
- Hitachi, Ltd.
- Kunihiko Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Time stamp generating system
- Patent number 7,200,682
- Issue date Apr 3, 2007
- Hitachi, Ltd.
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for recovering the validity of cryptographically...
- Patent number 7,134,021
- Issue date Nov 7, 2006
- Hitachi, Ltd.
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital watermark data embedding method, and digital watermark data...
- Patent number 7,047,412
- Issue date May 16, 2006
- Hitachi, Ltd.
- Isao Echizen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and system for distributing multimedia data with management...
- Patent number 6,889,211
- Issue date May 3, 2005
- Hitachi, Ltd.
- Hiroshi Yoshiura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Contents rendering control method, contents reproducing equipment,...
- Patent number 6,865,677
- Issue date Mar 8, 2005
- Hitachi, Ltd.
- Isao Echizen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital signature generating method and digital signature verifying...
- Patent number 6,816,969
- Issue date Nov 9, 2004
- Hitachi, Ltd.
- Kunihiko Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of physical individual authentication and system using the same
- Patent number 6,775,775
- Issue date Aug 10, 2004
- Hitachi, Ltd.
- Hiroshi Yoshiura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital data authentication method
- Patent number 6,499,105
- Issue date Dec 24, 2002
- Hitachi, Ltd.
- Hiroshi Yoshiura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Distributed object system and service supply method therein
- Patent number 6,327,658
- Issue date Dec 4, 2001
- Hitachi, Ltd.
- Seiichi Susaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital data authentication method
- Patent number 6,131,162
- Issue date Oct 10, 2000
- Hitachi Ltd.
- Hiroshi Yoshiura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Slip processing method processing data from slips with varying formats
- Patent number 5,504,676
- Issue date Apr 2, 1996
- Hitachi, Ltd.
- Singi Domen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Communication network management system for displaying operation st...
- Patent number 5,483,631
- Issue date Jan 9, 1996
- Hitachi, Ltd.
- Yasuhiko Nagai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Network management method and system
- Patent number 5,204,955
- Issue date Apr 20, 1993
- Hitachi, Ltd.
- Takashi Kagei
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secret information service system and method
- Patent number 5,117,458
- Issue date May 26, 1992
- Hitachi, Ltd.
- Kazuo Takaragi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Encipher method and decipher method
- Patent number 5,103,479
- Issue date Apr 7, 1992
- Hitachi Ltd.
- Kazuo Takaragi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for image compression
- Patent number 5,058,186
- Issue date Oct 15, 1991
- Hitachi, Ltd.
- Shinichiro Miyaoka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Communication circuit switching or parallel operation system
- Patent number 5,031,211
- Issue date Jul 9, 1991
- Hitachi, Ltd.
- Yasuhiro Nagai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for electronic transaction with digital signature
- Patent number 5,018,196
- Issue date May 21, 1991
- Hitachi, Ltd.
- Kazuo Takaragi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Encipher method and decipher method
- Patent number 4,982,429
- Issue date Jan 1, 1991
- Hitachi, Ltd.
- Kazuo Takaragi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Encrypting system of data
- Patent number 4,969,190
- Issue date Nov 6, 1990
- Hitachi, Ltd.
- Kazuo Takaragi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for data coding
- Patent number 4,947,447
- Issue date Aug 7, 1990
- Hitachi, Ltd.
- Shinichiro Miyaoka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Network control method and apparatus therefor
- Patent number 4,920,529
- Issue date Apr 24, 1990
- Hitachi, Ltd.
- Ryoichi Sasaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
A-point to multi-points communication system
- Patent number 4,901,313
- Issue date Feb 13, 1990
- Hitachi, Ltd.
- Nobuyuki Fujikura
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic transaction system
- Patent number 4,885,777
- Issue date Dec 5, 1989
- Hitachi, Ltd.
- Kazuo Takaragi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
IC card
- Patent number 4,885,788
- Issue date Dec 5, 1989
- Hitachi, Ltd.
- Kazuo Takaragi
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
PROGRAMMABLE CONTROLLER, PROGRAMMABLE CONTROLLER SYSTEM, AND RECORD...
- Publication number 20240302810
- Publication date Sep 12, 2024
- Mitsubishi Electric Corporation
- Yasuo MASUI
- G05 - CONTROLLING REGULATING
Information Patent Application
CONTROL SYSTEM, CONTROL PROGRAM TRANSMISSION METHOD, AND RECORDING...
- Publication number 20230393549
- Publication date Dec 7, 2023
- Mitsubishi Electric Corporation
- Eiji ICHIKAWA
- G05 - CONTROLLING REGULATING
Information Patent Application
MEMORY DIAGNOSIS APPARATUS AND MEMORY DIAGNOSIS PROGRAM
- Publication number 20180240532
- Publication date Aug 23, 2018
- Mitsubishi Electric Corporation
- Ryoya ICHIOKA
- G11 - INFORMATION STORAGE
Information Patent Application
ELECTRONIC DOCUMENT AUTHENTICITY ASSURANCE METHOD AND ELECTRONIC DO...
- Publication number 20090193259
- Publication date Jul 30, 2009
- Hitachi, Ltd
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital signing method
- Publication number 20080098232
- Publication date Apr 24, 2008
- Hitachi, Ltd
- Kunihiko Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and system for recovering the validity of cryptographically...
- Publication number 20060059357
- Publication date Mar 16, 2006
- Hitachi, Ltd
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital data authentication method
- Publication number 20050182939
- Publication date Aug 18, 2005
- Hiroshi Yoshiura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Electronic document authenticity assurance method and electronic do...
- Publication number 20050015600
- Publication date Jan 20, 2005
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Time stamp generating system
- Publication number 20030212828
- Publication date Nov 13, 2003
- Kunihiko Miyazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital signature generating method and digital signature verifying...
- Publication number 20020108044
- Publication date Aug 8, 2002
- Kunihiko Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Digital data authentication method
- Publication number 20020095579
- Publication date Jul 18, 2002
- Hiroshi Yoshiura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Electronic payment method and system
- Publication number 20020049670
- Publication date Apr 25, 2002
- Hitachi, Ltd
- Toshiyuki Moritsu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Digital watermark data embedding method, and digital watermark data...
- Publication number 20020007403
- Publication date Jan 17, 2002
- Isao Echizen
- G06 - COMPUTING CALCULATING COUNTING

Ryoichi Sasaki

Person

Patents Grantslast 30 patents

Memory diagnosis apparatus and memory diagnosis program

Digital signing method

Method and system for recovering the validity of cryptographically...

Electronic document authenticity assurance method and electronic do...

Digital signing method

Time stamp generating system

Method and system for recovering the validity of cryptographically...

Digital watermark data embedding method, and digital watermark data...

Method and system for distributing multimedia data with management...

Contents rendering control method, contents reproducing equipment,...

Digital signature generating method and digital signature verifying...

Method of physical individual authentication and system using the same

Digital data authentication method

Distributed object system and service supply method therein

Digital data authentication method

Slip processing method processing data from slips with varying formats

Communication network management system for displaying operation st...

Network management method and system

Secret information service system and method

Encipher method and decipher method

Method and apparatus for image compression

Communication circuit switching or parallel operation system

Method for electronic transaction with digital signature

Encipher method and decipher method

Encrypting system of data

Method for data coding

Network control method and apparatus therefor

A-point to multi-points communication system

Electronic transaction system

IC card

Patents Applicationslast 30 patents

PROGRAMMABLE CONTROLLER, PROGRAMMABLE CONTROLLER SYSTEM, AND RECORD...

CONTROL SYSTEM, CONTROL PROGRAM TRANSMISSION METHOD, AND RECORDING...

MEMORY DIAGNOSIS APPARATUS AND MEMORY DIAGNOSIS PROGRAM

ELECTRONIC DOCUMENT AUTHENTICITY ASSURANCE METHOD AND ELECTRONIC DO...

Digital signing method

Method and system for recovering the validity of cryptographically...

Digital data authentication method

Electronic document authenticity assurance method and electronic do...

Time stamp generating system

Digital signature generating method and digital signature verifying...

Digital data authentication method

Electronic payment method and system

Digital watermark data embedding method, and digital watermark data...