Inventor
HASEBE TAKAYUKI
JP64 patents
⚠️ This page may combine multiple inventors who share the name “HASEBE TAKAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
35 patentsUS5796824AAug 18, 1998
Storage medium for preventing an irregular use by a third party
FUJITSU LTD163 citations99
US5737413AApr 7, 1998
Information distribution system wherein storage medium storing ciphered information is distributed
FUJITSU LTD180 citations99
US5555304ASep 10, 1996
Storage medium for preventing an illegal use by a third party
FUJITSU LTD109 citations99
US5539825AJul 23, 1996
Electronic cashless transaction system
FUJITSU LTD327 citations99
US5428684AJun 27, 1995
Electronic cashless transaction system
FUJITSU LTD275 citations99
US5392351AFeb 21, 1995
Electronic data protection system
FUJITSU LTD373 citations99
US5935243AAug 10, 1999
Licensee notification system
FUJITSU LTD95 citations98
US5621794AApr 15, 1997
Moving-picture encipherment method and system, and enciphered moving-picture decipherment method and system
FUJITSU LTD130 citations98
US6898708B2May 24, 2005
Device for reproducing data
FUJITSU LTD123 citations97
US5838791ANov 17, 1998
Encoder and decoder
FUJITSU LTD62 citations96
US5832083ANov 3, 1998
Method and device for utilizing data content
FUJITSU LTD73 citations96
US5761651AJun 2, 1998
Software charging system and software data utilization permitting device
FUJITSU LTD84 citations96
US5584022ADec 10, 1996
Enciphered file sharing method
FUJITSU LTD66 citations96
US5499299AMar 12, 1996
Modular arithmetic operation system
FUJITSU LTD101 citations96
US5440631AAug 8, 1995
Information distribution system wherein storage medium storing ciphered information is distributed
FUJITSU LTD55 citations96
US5325433AJun 28, 1994
Encryption communication system
FUJITSU LTD64 citations96
US5761308AJun 2, 1998
System for refunding payment for software
FUJITSU LTD74 citations95
US7272720B2Sep 18, 2007
Date-and-time management device and signature generation apparatus with date-and-time management function
FUJITSU LTD20 citations93
US6385726B1May 7, 2002
Software license protection via cryptography
FUJITSU LTD29 citations93
US8051302B1Nov 1, 2011
Data distributing system and recording medium used for it
FUJITSU LTD21 citations92
US7383446B1Jun 3, 2008
Recording device
FUJITSU LTD31 citations92
US7013392B1Mar 14, 2006
File processing unit
FUJITSU LTD24 citations92
US7000114B1Feb 14, 2006
Apparatus to create and/or verify digital signatures having a secure time element and an identifier of the apparatus
FUJITSU LTD40 citations92
US5917908AJun 29, 1999
File protection system, software utilization system using the file protection system and storage medium used in the software utilization system
FUJITSU LTD44 citations92
US7191155B2Mar 13, 2007
License transmitting and distributing system under offline environment and method thereof
FUJITSU LTD39 citations91
US7512801B1Mar 31, 2009
Authentication system, authentication method, signing apparatus, signing method, certifying apparatus, certifying method, and a computer-readable recording medium with a program making a computer execute the method recording therein
FUJITSU LTD11 citations84
US6687835B1Feb 3, 2004
Command authorization method
FUJITSU LTD16 citations84
US5953416ASep 14, 1999
Data processing apparatus
FUJITSU LTD17 citations84
US6434623B1Aug 13, 2002
Data transmission and data receiving apparatus that obtains file differences during transmission
FUJITSU LTD16 citations82
US10298578B2May 21, 2019
Communication relay device, communication network, and communication relay method
FUJITSU LTD2 citations73
US10567401B2Feb 18, 2020
Device and method for detecting attack in network
FUJITSU LTD2 citations72
US8040220B2Oct 18, 2011
Method and apparatus for managing tag information, and computer product
FUJITSU LTD4 citations63
US7325247B2Jan 29, 2008
Information management method using a recording medium with a secure area and a user-use area
FUJITSU LTD4 citations63
USRE39802EAug 28, 2007
Storage medium for preventing an irregular use by a third party
FUJITSU LTD2 citations63
US7747538B2Jun 29, 2010
Memory card
FUJITSU LTD5 citations62
SANYO ELECTRIC CO
10 patentsUS7181629B1Feb 20, 2007
Data distribution system as well as data supply device terminal device and recording device for the same
SANYO ELECTRIC CO66 citations96
US6999948B1Feb 14, 2006
Memory card
SANYO ELECTRIC CO57 citations95
US7783895B2Aug 24, 2010
Method and apparatus for encrypting data to be secured and inputting/outputting the same
SANYO ELECTRIC CO25 citations92
US7340055B2Mar 4, 2008
Memory card and data distribution system using it
SANYO ELECTRIC CO35 citations92
US7203312B1Apr 10, 2007
Data reproduction apparatus and data reproduction module
SANYO ELECTRIC CO28 citations92
US7945517B2May 17, 2011
Data distribution system and recording device for use therein
SANYO ELECTRIC CO7 citations84
US7599890B2Oct 6, 2009
Content data storage
SANYO ELECTRIC CO11 citations84
US7428307B2Sep 23, 2008
Data reproduction apparatus capable of safely controlling reproduction time of encrypted content data and data reproduction circuit and data recording apparatus used for the same
SANYO ELECTRIC CO16 citations84
US7716746B2May 11, 2010
Data storing device for classified data
SANYO ELECTRIC CO14 citations83
US7650328B2Jan 19, 2010
Data storage device capable of storing multiple sets of history information on input/output processing of security data without duplication
SANYO ELECTRIC CO9 citations83
NITTOKU CO LTD
2 patentsHITACHI LTD
1 patentTOKUTANI TAKASHI
1 patentSAKAI ATSUSHI
1 patentShowing the top 50 of 64 patents by PatentIndex Score.