Inventor
Ken Sakamura
Inventor
Tokyo, JP
Overview
Patents· 43 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing38%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes16%
G07FCoin-freed or like apparatus11%
H04LTransmission of digital information, e.g. telegraphic communication11%
G06KGraphical data reading4%
H04WWireless communication networks4%
LOC144%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
G07BTicket-issuing apparatus3%
G07CTime or attendance registers3%
PatentTitleYear
8,688,969'Cryptographic management apparatus, decryption management apparatus and program'20148,468,094'Electronic value exchange system, mobile terminal, and electronic value exchange method'20138,417,964'Software module management device and program'20138,406,422'Cryptographic module management apparatus, method, and program'20138,396,218'Cryptographic module distribution system, apparatus, and program'20138,370,643'Cryptographic module selecting device and program'20138,306,919'IC card and authentication method in electronic ticket distribution system'2012D0668640'Antenna for wireless communication'2012D0668639'Antenna for wireless communication'2012D0668638'Antenna for wireless communication'20128,161,499'Data processing device and data processing method'20128,122,261'Data communication apparatus and data communication method'20127,975,029'Terminal equipment'20117,896,236'Electronic value exchange system and electronic value exchange method'20117,882,030'Connection information management system for managing connection information used in communications between IC cards'20117,814,557'IC card and access control method'20107,580,897'IC card and authentication method in electronic ticket distribution system'20097,416,114'Electronic value transfer device equipped with non-contact IC interface'20087,403,924'Communication terminal, portable terminal, circulating server, providing server, electronic book distributing method, and electronic book distributing program'20087,357,329'IC card, terminal device, and data communication method'20087,346,718'Autonomous integrated-circuit card'20087,340,243'Connection information management system for managing connection information used in communications between IC cards'20085,680,568'Instruction format with sequentially performable operand address extension modification'19975,606,675'Data processor for invalidating prefetched instruction or branch history information'19975,434,988'Data processor implementing a two\'s complement addressing technique'19955,398,319'Microprocessor having apparatus for dynamically controlling a kind of operation to be performed by instructions to be executed'19955,327,542'Data processor implementing a two\'s complement addressing technique'19945,307,474'Apparatus and method for processing literal operand computer instructions'19945,274,637'Token-ring-type local area network'19935,210,835'Data processing system having apparatus for increasing the execution speed of bit field instructions'19935,201,039'Multiple address-space data processor with addressable register and context switching'19935,182,811'Exception, interrupt, and trap handling apparatus which fetches addressing and context data using a single instruction following an interrupt'19935,170,474'Method of searching a queue in response to a search instruction'19925,140,684'Access privilege-checking apparatus and method'19925,132,898'System for processing data having different formats'19925,121,474'Bit string data processor using dynamically addressable bit locations in memory so overlapping strings do not destroy data in memory'19925,073,856'Method of searching a queue in response to a search instruction'19915,029,069'Data processor'19914,977,497'Data processor'19904,945,472'Data processor with I/O area detection'19904,941,085'Data processing system having apparatus for increasing the execution speed of bit field instructions'19904,926,321'Method of searching a queue in response to a search instruction'19904,334,269'Data processing system having an integrated stack and register machine architecture'1982Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1982–2014Based in Tokyo, JP· patent location history
1990–2014Patents assigned to SAKAMURA KEN (21)· patent assignee history
1990–1997Patents assigned to MITSUBISHI ELECTRIC CORP (12)· patent assignee history
1990–1995Based in Minato-ku, JP· patent location history
1990Based in Kodaira, JP· patent location history
2008–2014Patents assigned to KOSHIZUKA NOBORU (14)· patent assignee history
2008–2013Patents assigned to HONGO SADAYUKI (9)· patent assignee history
2008–2013Patents assigned to ISHII KAZUHIKO (9)· patent assignee history
2008–2012Based in Shinagawa-ku, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SAKAMURA KENself | 21 | 1990–2014 |
| KOSHIZUKA NOBORU | 14 | 2008–2014 |
| MITSUBISHI ELECTRIC CORP | 12 | 1990–1997 |
| HONGO SADAYUKI | 9 | 2008–2013 |
| ISHII KAZUHIKO | 9 | 2008–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 34 | 1982–2014 |
| Shinagawa-ku, JP | 5 | 2008–2012 |
| Minato-ku, JP | 3 | 1990–1995 |
| Kodaira, JP | 1 | 1990 |