Inventor
Hiroyuki Kitajima
Inventor
Yokohama, JP
Overview
Patents· 58 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing56%
H04JMultiplex communication10%
LOC129%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
F16FSprings3%
H03KPulse technique3%
H04LTransmission of digital information, e.g. telegraphic communication3%
A61KPreparations for medical, dental or toiletry purposes1%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations1%
C12NMicroorganisms or enzymes1%
PatentTitleYear
9,819,432'Transmission apparatus and transmission method'20179,735,907'Transmission device'20179,729,262'Optical receiver and method of optical reception'20179,562,912'Method of identifying abnormal cells by expression levels of ETFB'2017D0763179'Tread portion of an automobile tire'2016D0758290'Tread portion of an automobile tire'2016D0758293'Tread portion of an automobile tire'2016D0751031'Tread portion of an automobile tire'2016D0748571'Tread portion of an automobile tire'2016D0748046'Tread portion of an automobile tire'20169,209,926'Communication system and method therefor'20159,203,603'Communication system, frame synchronization detection apparatus, and frame synchronization detection method'20159,166,739'Error correction processing circuit and error correction processing method'20158,588,256'Transmission apparatus and signal mapping method'20138,571,073'Frame mapping apparatus and frame mapping method'20137,861,034'Load distribution of multiple disks'20107,498,855'Power-on clear circuit'20097,320,089'Storage unit subsystem'20087,254,674'Distribution of I/O requests across multiple disk units'20077,082,496'Cache control method and apparatus'20066,938,125'Storage system with data prefetch function'20056,874,101'Storage unit subsystem'20056,757,839'Storage unit subsystem'20046,728,832'Distribution of I/O requests across multiple disk units'20046,631,443'Disk storage system having capability for performing parallel read operation'20036,532,549'Storage unit subsystem'20036,518,804'Semiconductor integrated circuit device'20036,327,673'Storage unit subsystem'20016,148,367'Controller limiting modification of cache based upon amount of dirty lines in the cache'20006,145,091'Storage unit subsystem'20006,108,750'Simultaneous read/write control of data storage disk units'20006,085,286'Cache control method and apparatus'20005,917,999'Storage unit subsystem'19995,835,938'Read/write control for grouped disk storage including parallel access'19985,694,576'Cache control by adding record identification information to partial write request'19975,682,396'Control unit in storage subsystem with improvement of redundant data updating'19975,680,574'Data distribution utilizing a master disk unit for fetching and for writing to remaining disk units'19975,638,508'Method and a system for processing a log record'19975,623,631'Limiting modification of cache entries in a write-back cache based upon the amount of dirty lines in the cache'19975,606,684'On-line dumping system and disk sub-system'19975,497,472'Cache control method and apparatus for storing data in a cache memory and for indicating completion of a write request irrespective of whether a record to be accessed exists in an external storage unit'19965,418,929'Controller for storage unit and method of controlling storage unit'19955,410,666'On-line dumping system and disk sub system'19955,388,016'Magnetic tape data management method and apparatus'19955,307,473'Controller for storage unit and method of controlling storage unit'19945,261,065'Input/output processing method in a database management system'19935,257,352'Input/output control method and system'19935,253,351'Memory controller with a cache memory and control method of cache memory including steps of determining memory access threshold values'19935,239,644'Data preloading method and system for using a buffer'19935,193,154'Buffered peripheral system and method for backing up and retrieving data to and from backup memory device'19935,187,778'Buffered disk unit and method of transferring data therein'19934,967,341'Method and apparatus for processing data base'19904,926,324'I/O control system and method'19904,916,655'Method and apparatus for retrieval of a search string'19904,626,226'Torque fluctuation damper'19864,542,458'Method of and apparatus for assigning software resources to memory devices'19854,495,570'Processing request allocator for assignment of loads in a distributed processing system'19854,431,100'Torque fluctuation damper'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2010Patents assigned to HITACHI LTD (39)· patent assignee history
1985–2008Based in Yokohama, JP· patent location history
1994–2000Patents assigned to HITACHI MICROCOMPUTER SYST (3)· patent assignee history
2010–2017Based in Tokyo, JP· patent location history
2013–2017Patents assigned to FUJITSU LTD (8)· patent assignee history
2013–2017Patents assigned to KITAJIMA HIROYUKI (4)· patent assignee history
2013–2015Based in Kawasaki, JP· patent location history
2015–2017Based in Oyama, JP· patent location history
2016Patents assigned to BRIDGESTONE CORP (6)· patent assignee history
2016Based in Chuo-ku, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 39 | 1985–2010 |
| FUJITSU LTD | 8 | 2013–2017 |
| BRIDGESTONE CORP | 6 | 2016 |
| KITAJIMA HIROYUKIself | 4 | 2013–2017 |
| HITACHI MICROCOMPUTER SYST | 3 | 1994–2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 37 | 1985–2008 |
| Oyama, JP | 5 | 2015–2017 |
| Chuo-ku, JP | 5 | 2016 |
| Tokyo, JP | 3 | 2010–2017 |
| Kawasaki, JP | 3 | 2013–2015 |