Inventor · disambiguated record
Kazutomo Ushijima
Also filed as: USHIJIMA KAZUTOMO
25 granted patents·3 pending applications·493 citations·filing 1997–2015
96Inventor score
Top patents by PatentIndex Score
28 records- 0195US6381601B1Grouping and duplicate removal method in a databaseHITACHI LTD·Filed 1999·Granted Apr 30, 2002·234 cites·18 claims
- 0282US8041685B2Method of changing system configuration in shared-nothing database management systemHITACHI LTD·Filed 2008·Granted Oct 18, 2011·10 cites·11 claims
- 0382US7617265B2Indexing method of database management systemHITACHI LTD·Filed 2006·Granted Nov 10, 2009·10 cites·5 claims
- 0482US6898594B2Integrated database system and program storage mediumHITACHI LTD·Filed 2001·Granted May 24, 2005·7 cites·11 claims
- 0580US7966307B2Document search method and document search apparatus that use a combination of index-type search and scan-type searchHITACHI LTD·Filed 2008·Granted Jun 21, 2011·11 cites·15 claims
- 0678US10366075B2Database management system and methodHITACHI LTD·Filed 2014·Granted Jul 30, 2019·7 cites·18 claims
- 0776US9348866B2Database processing method, database processing system and database serverTANAKA MICHIKO·Filed 2011·Granted May 24, 2016·5 cites·13 claims
- 0874US7899851B2Indexing method of database management systemHITACHI LTD·Filed 2009·Granted Mar 1, 2011·5 cites·8 claims
- 0973US7228416B2Database access method and system capable of concealing the contents of queryHITACHI LTD·Filed 2001·Granted Jun 5, 2007·17 cites·12 claims
- 1073US6832216B2Method and system for mining association rules with negative itemsHITACHI LTD·Filed 2001·Granted Dec 14, 2004·21 cites·16 claims
- 1171US7370029B2Method of changing system configuration in shared-nothing database management systemHITACHI LTD·Filed 2004·Granted May 6, 2008·14 cites·1 claims
- 1270US8510316B2Database processing system and methodSHIMIZU AKIRA·Filed 2009·Granted Aug 13, 2013·5 cites·13 claims
- 1370US6014655AMethod of retrieving databaseHITACHI LTD·Filed 1997·Granted Jan 11, 2000·39 cites·23 claims
- 1467US5890150ARandom sampling method for use in a database processing system and a database processing system based thereonHITACHI LTD·Filed 1998·Granted Mar 30, 1999·50 cites·16 claims
- 1566US7111019B1Data 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 systemHITACHI LTD·Filed 1999·Granted Sep 19, 2006·43 cites·3 claims
- 1665US7680813B2Information management systemHITACHI LTD·Filed 2006·Granted Mar 16, 2010·8 cites·16 claims
- 1764US7526509B2Information lifecycle managing system and its data arrangement determining methodHITACHI LTD·Filed 2004·Granted Apr 28, 2009·0 cites·5 claims
- 1863US10515071B2Database management system and database management method using logical addresses and timestampsHITACHI LTD·Filed 2015·Granted Dec 24, 2019·1 cites·11 claims
- 1960US8296286B2Database processing method and database processing systemTANAKA MICHIKO·Filed 2010·Granted Oct 23, 2012·1 cites·16 claims
- 2058US10025675B2Log management method and computer systemHITACHI LTD·Filed 2015·Granted Jul 17, 2018·1 cites·8 claims
- 2155US7167854B2Database control methodHITACHI LTD·Filed 2004·Granted Jan 23, 2007·4 cites·1 claims
- 2249US10565190B2Index tree search method and computerHITACHI LTD·Filed 2014·Granted Feb 18, 2020·0 cites·20 claims
- 2344US2015310129A1Method of managing database, management computer and storage mediumHITACHI LTD·Filed 2013·Application pending·0 cites
- 2444US2007294338A1Database access method and system capable of concealing the contents of queryNISHIZAWA ITARU·Filed 2007·Application pending·0 cites
- 2544US2006253435A1Data 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 systemNISHIZAWA ITARU·Filed 2006·Application pending·0 cites
- 2639US7752216B2Retrieval apparatus, retrieval method and retrieval programHITACHI LTD·Filed 2007·Granted Jul 6, 2010·0 cites·12 claims
- 2738US9298394B2Data arrangement method and data management system for improving performance using a logical storage volumeTOKUDA SEISUKE·Filed 2010·Granted Mar 29, 2016·0 cites·15 claims
- 2833US9384219B2Computer system, data retrieval method and database management computerUSHIJIMA KAZUTOMO·Filed 2011·Granted Jul 5, 2016·0 cites·6 claims
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