Takehisa Kato

Person

Fuchu-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Shop apparatus and purchaser apparatus
- Patent number 9,129,262
- Issue date Sep 8, 2015
- Kabushiki Kaisha Toshiba
- Takuya Yoshida
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Access control system, device, and program
- Patent number 8,397,291
- Issue date Mar 12, 2013
- Kabushiki Kaisha Toshiba
- Shingo Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Content distribution/browsing system, content distribution apparatu...
- Patent number 8,184,807
- Issue date May 22, 2012
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secret sharing apparatus, method, and program
- Patent number 8,077,863
- Issue date Dec 13, 2011
- Kabushiki Kaisha Toshiba
- Norikazu Hosaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secret sharing device, method, and program
- Patent number 8,074,068
- Issue date Dec 6, 2011
- Kabushiki Kaisha Toshiba
- Yoshihiro Fujii
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
User apparatus and program
- Patent number 7,995,763
- Issue date Aug 9, 2011
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Access control system, device, and program
- Patent number 7,519,992
- Issue date Apr 14, 2009
- Kabushiki Kaisha Toshiba
- Shingo Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus of enciphering and deciphering data using keys...
- Patent number 7,433,474
- Issue date Oct 7, 2008
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
System of authentication, apparatus, program and method
- Patent number 7,272,717
- Issue date Sep 18, 2007
- Kabushiki Kaisha Toshiba
- Shingo Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital data reproduction device
- Patent number 6,751,321
- Issue date Jun 15, 2004
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Copy-guard system and information recording medium used in the same...
- Patent number 6,556,679
- Issue date Apr 29, 2003
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Copy protection apparatus and information recording medium used in...
- Patent number 6,438,692
- Issue date Aug 20, 2002
- Kabushiki Kaisha Toshiba
- Taku Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information sending system and method for sending encrypted informa...
- Patent number 6,381,331
- Issue date Apr 30, 2002
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus of enciphering and deciphering data using keys...
- Patent number 6,347,145
- Issue date Feb 12, 2002
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Device and method for preventing fraudulent copies of data containi...
- Patent number 6,343,281
- Issue date Jan 29, 2002
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- G11 - INFORMATION STORAGE
Information Patent Grant
Semiconductor integrated circuit for cryptographic process and encr...
- Patent number 6,327,654
- Issue date Dec 4, 2001
- Kabushiki Kaisha Toshiba
- Yukihito Oowaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Copy protection apparatus and information recording medium used in...
- Patent number 6,301,663
- Issue date Oct 9, 2001
- Kabushiki Kaisha Toshiba
- Taku Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Secret key transfer method which is highly secure and can restrict...
- Patent number 6,160,890
- Issue date Dec 12, 2000
- Matsushita Electric Industrial Co., Ltd.
- Makoto Tatebayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Encrypted communication system that limits the damage caused when a...
- Patent number 6,151,394
- Issue date Nov 21, 2000
- Matsushita Electric Industrial Co., Ltd.
- Makoto Tatebayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Secret key transfer method which is highly secure and can restrict...
- Patent number 6,009,174
- Issue date Dec 28, 1999
- Matsushita Electric Industrial Co., Ltd.
- Makoto Tatebayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of printing bar codes on pieces to deliver, and method and s...
- Patent number 5,984,174
- Issue date Nov 16, 1999
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents

Information Patent Application
SECRET SHARING DEVICE, METHOD, AND PROGRAM
- Publication number 20090144543
- Publication date Jun 4, 2009
- Yoshihiro Fujii
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RECIPIENT APPARATUS, FILE SERVER APPARATUS AND PROGRAM
- Publication number 20090049147
- Publication date Feb 19, 2009
- Takehisa Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
USER APPARATUS AND PROGRAM
- Publication number 20090019279
- Publication date Jan 15, 2009
- Takehisa Kato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CONTENT DISTRIBUTION/BROWSING SYSTEM, CONTENT DISTRIBUTION APPARATU...
- Publication number 20080304661
- Publication date Dec 11, 2008
- Takehisa KATO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND APPARATUS OF ENCIPHERING AND DECIPHERING DATA USING MULT...
- Publication number 20080279383
- Publication date Nov 13, 2008
- Kabushiki Kaisha Toshiba
- Takehisa Kato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SECRET SHARING APPARATUS, METHOD, AND PROGRAM
- Publication number 20080232580
- Publication date Sep 25, 2008
- Norikazu HOSAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SHOP APPARATUS, PURCHASER APPARATUS, PURCHASER IDENTITY PROVING APP...
- Publication number 20080177636
- Publication date Jul 24, 2008
- Takuya Yoshida
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Anonymous order system, an anonymous order apparatus, and a program...
- Publication number 20070255661
- Publication date Nov 1, 2007
- Takuya Yoshida
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ACCESS CONTROL SYSTEM, DEVICE, AND PROGRAM
- Publication number 20070136823
- Publication date Jun 14, 2007
- Shingo Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Anonymity service providing system, device, and program
- Publication number 20060184666
- Publication date Aug 17, 2006
- Yukiteru Nozawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Access control system, device, and program
- Publication number 20040073814
- Publication date Apr 15, 2004
- Shingo Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System of authentication, apparatus, program and method
- Publication number 20040019788
- Publication date Jan 29, 2004
- Shingo Miyazaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus of enciphering and deciphering data using keys...
- Publication number 20020080972
- Publication date Jun 27, 2002
- TAKEHISA KATO
- G11 - INFORMATION STORAGE
Information Patent Application
Computer program product and method for exchanging XML signature
- Publication number 20020040431
- Publication date Apr 4, 2002
- Takehisa Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Copy protection apparatus and information recording medium used in...
- Publication number 20020003880
- Publication date Jan 10, 2002
- Kabushiki Kaisha Toshiba
- Taku Kato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND APPARATUS OF ENCIPHERING AND DECIPHERING DATA USING MULT...
- Publication number 20010019615
- Publication date Sep 6, 2001
- TAKEHISA KATO
- G11 - INFORMATION STORAGE

Takehisa Kato

Person

Patents Grantslast 30 patents

Shop apparatus and purchaser apparatus

Access control system, device, and program

Content distribution/browsing system, content distribution apparatu...

Secret sharing apparatus, method, and program

Secret sharing device, method, and program

User apparatus and program

Access control system, device, and program

Method and apparatus of enciphering and deciphering data using keys...

System of authentication, apparatus, program and method

Digital data reproduction device

Copy-guard system and information recording medium used in the same...

Copy protection apparatus and information recording medium used in...

Information sending system and method for sending encrypted informa...

Method and apparatus of enciphering and deciphering data using keys...

Device and method for preventing fraudulent copies of data containi...

Semiconductor integrated circuit for cryptographic process and encr...

Copy protection apparatus and information recording medium used in...

Secret key transfer method which is highly secure and can restrict...

Encrypted communication system that limits the damage caused when a...

Secret key transfer method which is highly secure and can restrict...

Method of printing bar codes on pieces to deliver, and method and s...

Patents Applicationslast 30 patents

SECRET SHARING DEVICE, METHOD, AND PROGRAM

RECIPIENT APPARATUS, FILE SERVER APPARATUS AND PROGRAM

USER APPARATUS AND PROGRAM

CONTENT DISTRIBUTION/BROWSING SYSTEM, CONTENT DISTRIBUTION APPARATU...

METHOD AND APPARATUS OF ENCIPHERING AND DECIPHERING DATA USING MULT...

SECRET SHARING APPARATUS, METHOD, AND PROGRAM

SHOP APPARATUS, PURCHASER APPARATUS, PURCHASER IDENTITY PROVING APP...

Anonymous order system, an anonymous order apparatus, and a program...

ACCESS CONTROL SYSTEM, DEVICE, AND PROGRAM

Anonymity service providing system, device, and program

Access control system, device, and program

System of authentication, apparatus, program and method

Method and apparatus of enciphering and deciphering data using keys...

Computer program product and method for exchanging XML signature

Copy protection apparatus and information recording medium used in...

METHOD AND APPARATUS OF ENCIPHERING AND DECIPHERING DATA USING MULT...