Inventor · disambiguated record
Hisashi Ishijima
Also filed as: ISHIJIMA HISASHI
20 granted patents·2 pending applications·1,227 citations·filing 1990–2013
97Inventor score
Top patents by PatentIndex Score
22 records- 0197US6658408B2Document information management systemRICOH KK·Filed 2002·Granted Dec 2, 2003·156 cites·66 claims
- 0296US6537324B1Generating and storing a link correlation table in hypertext documents at the time of storageRICOH KK·Filed 1998·Granted Mar 25, 2003·280 cites·25 claims
- 0396US5235384AImage forming apparatus with replaceable process unitsRICOH KK·Filed 1990·Granted Aug 10, 1993·72 cites·11 claims
- 0495US6381593B1Document information management systemRICOH KK·Filed 1999·Granted Apr 30, 2002·180 cites·19 claims
- 0593US6317570B1Field service system for image forming devicesRICOH KK·Filed 2000·Granted Nov 13, 2001·52 cites·30 claims
- 0692US7599864B2System and method for transmitting information regarding supplies and suppliers for image forming equipmentRICOH KK·Filed 2007·Granted Oct 6, 2009·13 cites·15 claims
- 0792US7363580B2Intermediate address table for converting position information to an address of a link structure correlated information file on a hypertext documentRICOH KK·Filed 2003·Granted Apr 22, 2008·72 cites·14 claims
- 0891US5367363AImage forming apparatus having rotatable electrophotographic process unitRICOH KK·Filed 1991·Granted Nov 22, 1994·42 cites·35 claims
- 0986US6529788B1Recycling system and recycling methodRICOH KK·Filed 1999·Granted Mar 4, 2003·51 cites·49 claims
- 1082US6910184B1Document information management systemRICOH KK·Filed 2000·Granted Jun 21, 2005·30 cites·31 claims
- 1181US7321867B1System and method for transmitting information regarding supplies and suppliers for image forming equipmentRICOH KK·Filed 2000·Granted Jan 22, 2008·17 cites·19 claims
- 1281US7227655B1Utilizing otherwise unused space on cover or partition sheetsRICOH CORP·Filed 2000·Granted Jun 5, 2007·22 cites·16 claims
- 1379USRE36301EImage forming apparatus having rotatable electrophotographic process unitRICOH KK·Filed 1996·Granted Sep 14, 1999·25 cites·36 claims
- 1476US6035308ASystem and method of managing document data with linking data recorded on paper mediaRICOH KK·Filed 1996·Granted Mar 7, 2000·75 cites·134 claims
- 1575US6356923B1Document information management systemRICOH KK·Filed 1998·Granted Mar 12, 2002·72 cites·22 claims
- 1673US7624045B2System and method for transmitting information regarding supplies and suppliers for image forming equipmentRICOH KK·Filed 2004·Granted Nov 24, 2009·10 cites·17 claims
- 1766US6014668ADocument information management system and method of generating a human-computer interactive document sheet allowing relevant information retrieval from a remote siteRICOH KK·Filed 1997·Granted Jan 11, 2000·50 cites·36 claims
- 1865US8554786B2Document information management systemYANO TAKASHI·Filed 2006·Granted Oct 8, 2013·5 cites·30 claims
- 1957US9111008B2Document information management systemRICOH CO LTD·Filed 2013·Granted Aug 18, 2015·0 cites·5 claims
- 2055US7512874B2Document information management systemRICOH KK·Filed 2004·Granted Mar 31, 2009·3 cites·15 claims
- 2149US2007201051A1Utilizing otherwise unused space on cover or partition sheetsUCHIDA YUKI·Filed 2007·Application pending·0 cites
- 2234US2004059727A1Document information management systemFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →