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Inventor

Kunihiko Miyazaki

Inventor
Yokohama, JP

Overview

24→
Patents
2004–2016
Patent span
Electricity
Primary field (CPC H)

Patents· 24 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication56%
G06FElectric digital data processing32%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes9%
G01NInvestigating or analysing materials by determining their chemical or physical properties3%
PatentTitleYear
9,419,804'Data authenticity assurance method, management computer, and storage medium'20168,108,906'Electronic data authenticity assurance method and program'20128,094,824'Encrypting device, decrypting device, information system, encrypting method, decrypting method, and program'20127,941,667'Electronic document authenticity guarantee method, and electronic document disclosure system'20117,840,487'Digital content encryption and decryption method and workflow system using digital content'20107,770,009'Digital signing method'20107,694,126'Method and system for recovering the validity of cryptographically signed digital data'20107,574,605'Method of managing digital signature, apparatus for processing digital signature, and a computer readable medium for recording program of managing digital signature'20097,526,645'Electronic document authenticity assurance method and electronic document disclosure system'20097,478,432'Method and system for contents control'20097,441,115'Method for verifying a digital signature'20087,401,225'Method and apparatus for publishing signature log entry'20087,359,515'Method and apparatus for symmetric-key decryption'20087,305,558'Digital signing method'20077,210,043'Trusted computer system'20077,206,939'File storage system and a NAS server'20077,200,682'Time stamp generating system'20077,200,232'Method and apparatus for symmetric-key decryption'20077,134,021'Method and system for recovering the validity of cryptographically signed digital data'20067,110,545'Method and apparatus for symmetric-key encryption'20067,099,002'Defect detector and method of detecting defect'20067,047,407'Network system enabling transmission control'20066,873,706'Processing apparatus, program, or system of secret information'20056,816,969'Digital signature generating method and digital signature verifying method'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2016Patents assigned to HITACHI LTD (23)· patent assignee history
2004–2012Based in Yokohama, JP· patent location history
2005Based in Kawasaki, JP· patent location history
2006Patents assigned to RICOH KK (1)· patent assignee history
2006Based in Yohokama, JP· patent location history
2006Based in Numazu, JP· patent location history
2010–2016Based in Tokyo, JP· patent location history
2012Patents assigned to HATANO YASUO (2)· patent assignee history
2012Patents assigned to MIYAZAKI KUNIHIKO (2)· patent assignee history
2012Patents assigned to MATSUMOTO KENJI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD232004–2016
HATANO YASUO22012
MIYAZAKI KUNIHIKOself22012
MATSUMOTO KENJI12012
RICOH KK12006
Locations
LocationPatentsSpan
Yokohama, JP192004–2012
Tokyo, JP22010–2016
Yohokama, JP12006
Numazu, JP12006
Kawasaki, JP12005