Inventor · disambiguated record
Natsuko Sugaya
Also filed as: SUGAYA NATSUKO
20 granted patents·4 pending applications·538 citations·filing 1997–2018
95Inventor score
Top patents by PatentIndex Score
24 records- 0195US6665668B1Document retrieval method and system and computer readable storage mediumHITACHI LTD·Filed 2000·Granted Dec 16, 2003·144 cites·12 claims
- 0291US6473754B1Method and system for extracting characteristic string, method and system for searching for relevant document using the same, storage medium for storing characteristic string extraction program, and storage medium for storing relevant document searching programHITACHI LTD·Filed 1999·Granted Oct 29, 2002·144 cites·22 claims
- 0384US7054860B2Method and system for retrieving a document and computer readable storage mediumHITACHI LTD·Filed 2003·Granted May 30, 2006·42 cites·10 claims
- 0481US6865571B2Document retrieval method and system and computer readable storage mediumHITACHI LTD·Filed 2001·Granted Mar 8, 2005·33 cites·7 claims
- 0573US6549898B1Method of and an apparatus for retrieving and delivering documents and a recording media on which a program for retrieving and delivering documents are storedHITACHI LTD·Filed 2000·Granted Apr 15, 2003·28 cites·22 claims
- 0671US6665667B2Method of and an apparatus for retrieving and delivering documents and a recording media on which a program for retrieving and delivering documents are storedHITACHI LTD·Filed 2002·Granted Dec 16, 2003·14 cites·20 claims
- 0769US7440938B2Method and apparatus for calculating similarity among documentsHITACHI LTD·Filed 2004·Granted Oct 21, 2008·17 cites·6 claims
- 0868US6757676B1Text mining method and apparatus allowing a user to analyze contents of a document set from plural analysis axesHITACHI LTD·Filed 2000·Granted Jun 29, 2004·23 cites·17 claims
- 0967US7039636B2Document retrieval method and document retrieval systemHITACHI LTD·Filed 2003·Granted May 2, 2006·23 cites·4 claims
- 1065US6496820B1Method and search method for structured documentsHITACHI LTD·Filed 1999·Granted Dec 17, 2002·28 cites·2 claims
- 1164US8645319B2Information processing system, data update method and data update programIWAKI MASASHI·Filed 2009·Granted Feb 4, 2014·6 cites·12 claims
- 1262US6738786B2Data display method and apparatus for use in text miningHITACHI LTD·Filed 2001·Granted May 18, 2004·9 cites·23 claims
- 1354US2015234872A1Computer, data processing method, and non-transitory storage mediumHITACHI LTD·Filed 2013·Application pending·0 cites
- 1452US6826567B2Registration method and search method for structured documentsHITACHI LTD·Filed 2002·Granted Nov 30, 2004·9 cites·10 claims
- 1548US10423613B2Data search method and data search systemHITACHI LTD·Filed 2013·Granted Sep 24, 2019·0 cites·10 claims
- 1648US10394870B2Search methodHITACHI LTD·Filed 2014·Granted Aug 27, 2019·0 cites·16 claims
- 1745US10860960B2Project support system and methodHITACHI LTD·Filed 2018·Granted Dec 8, 2020·0 cites·10 claims
- 1843US5970485ANews clipping method and systemHITACHI LTD·Filed 1997·Granted Oct 19, 1999·16 cites·21 claims
- 1942US2016154851A1Computing device, storage medium, and data search methodHITACHI LTD·Filed 2013·Application pending·0 cites
- 2041US2008177777A1Database management method, program thereof and database management apparatusOSAKI KAZUHIRO·Filed 2007·Application pending·0 cites
- 2139US10368191B2Confined space estimation system and confined space estimation methodHITACHI LTD·Filed 2015·Granted Jul 30, 2019·0 cites·8 claims
- 2239US2009271435A1Data management method, data management program, and data management deviceYAKO KATSUSHI·Filed 2009·Application pending·0 cites
- 2336US7333983B2Method of and an apparatus for retrieving and delivering documents and a recording media on which a program for retrieving and delivering documents are storedHITACHI LTD·Filed 2003·Granted Feb 19, 2008·2 cites·17 claims
- 2432US8191066B2Continuously loading series of data whether data is requested or not, in response to end command unloading the data in descendent order of reference probabilitySUGAYA NATSUKO·Filed 2008·Granted May 29, 2012·0 cites·14 claims
Join the waitlist — get patent alerts
Get an alert when Natsuko Sugaya files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →