Inventor
NISHIZAWA ITARU
JP28 patents
⚠️ This page may combine multiple inventors who share the name “NISHIZAWA ITARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
22 patentsUS6694306B1Feb 17, 2004
System and method for query processing using virtual table interface
HITACHI LTD271 citations99
US6381601B1Apr 30, 2002
Grouping and duplicate removal method in a database
HITACHI LTD234 citations99
US7644110B2Jan 5, 2010
Stream data processing system and stream data processing method
HITACHI LTD109 citations98
US7403959B2Jul 22, 2008
Query processing method for stream data processing systems
HITACHI LTD109 citations98
US6757670B1Jun 29, 2004
Method and system for query processing
HITACHI LTD84 citations98
US6820085B2Nov 16, 2004
Web system having clustered application servers and clustered databases
HITACHI LTD63 citations96
US7941413B2May 10, 2011
Index processing method and computer systems
HITACHI LTD22 citations92
US7849227B2Dec 7, 2010
Stream data processing method and computer systems
HITACHI LTD37 citations92
US7111019B1Sep 19, 2006
Data warehouse system and query processing method used in the system, and data collecting method and apparatus for the method, and charging method and apparatus in the system
HITACHI LTD43 citations92
US5890150AMar 30, 1999
Random sampling method for use in a database processing system and a database processing system based thereon
HITACHI LTD50 citations92
US6832216B2Dec 14, 2004
Method and system for mining association rules with negative items
HITACHI LTD21 citations91
US6519598B1Feb 11, 2003
Active memory and memory control method, and heterogeneous data integration use system using the memory and method
HITACHI LTD25 citations90
US8788481B2Jul 22, 2014
Method for processing stream data and system thereof
HITACHI LTD5 citations84
US7958108B2Jun 7, 2011
Query processing method for stream data processing systems
HITACHI LTD7 citations84
US7231401B1Jun 12, 2007
Method and apparatus for implementing extensible network-attached secondary storage
HITACHI LTD18 citations83
US7228416B2Jun 5, 2007
Database access method and system capable of concealing the contents of query
HITACHI LTD17 citations82
US8032554B2Oct 4, 2011
Stream data processing method and system
HITACHI LTD16 citations81
US6898594B2May 24, 2005
Integrated database system and program storage medium
HITACHI LTD7 citations72
US7269635B2Sep 11, 2007
File transfer system for secure remote file accesses
HITACHI LTD5 citations63
US9424312B2Aug 23, 2016
Method for processing stream data and system thereof
HITACHI LTD2 citations62
US7949653B2May 24, 2011
Stream data processing method and stream data processing system
HITACHI LTD2 citations62
US8024350B2Sep 20, 2011
Stream data processing control method, stream data processing apparatus, and stream data processing control program
HITACHI LTD2 citations58