Inventor · disambiguated record
Tadashi Hayakawa
Also filed as: HAYAKAWA TADASHI
80 granted patents·8 pending applications·1,177 citations·filing 1987–2023
99Inventor score
Top patents by PatentIndex Score
88 records- 0198US8393721B2Imaging-material container, ink cartridge, and image forming apparatusKATOH TOMOMI·Filed 2010·Granted Mar 12, 2013·43 cites·16 claims
- 0298US8346105B2Information storage device, removable device, developer container, and image forming apparatusRICOH CO LTD·Filed 2012·Granted Jan 1, 2013·15 cites·20 claims
- 0398US5585896AImage forming apparatus with a contact member contacting an image carrierRICOH KK·Filed 1994·Granted Dec 17, 1996·311 cites·16 claims
- 0497US9081327B2Apparatus and method for preventing an information storage device from falling from a removable deviceTAKAHASHI YASUFUMI·Filed 2014·Granted Jul 14, 2015·9 cites·29 claims
- 0596US8244163B2Toner container and image forming apparatusYOSHIZAWA HIDEO·Filed 2010·Granted Aug 14, 2012·18 cites·17 claims
- 0695US8385787B2Image forming apparatus and medium container installed thereinRICOH CO LTD·Filed 2010·Granted Feb 26, 2013·12 cites·19 claims
- 0795US8050597B2Toner container having a gear portion and image forming apparatusRICOH CO LTD·Filed 2007·Granted Nov 1, 2011·17 cites·19 claims
- 0895US6513669B2Bottle for hot filling use, equipped with vacuum absorption panels in the body portionYOSHINO KOGYOSHO CO LTD·Filed 2001·Granted Feb 4, 2003·78 cites·1 claims
- 0994US9069287B2Apparatus and method for preventing an information storage device from falling from a removable deviceTAKAHASHI YASUFUMI·Filed 2014·Granted Jun 30, 2015·4 cites·30 claims
- 1094US8965250B2Cap, powder container, developer supply device, and image forming apparatusKOMATSU MAKOTO·Filed 2011·Granted Feb 24, 2015·8 cites·27 claims
- 1194US8909071B2Apparatus and method for preventing an information storage device from falling from a removable deviceTAKAHASHI YASUFUMI·Filed 2013·Granted Dec 9, 2014·4 cites·25 claims
- 1294US7699183B2Square bottle manufactured from synthetic resinCOCA COLA CO·Filed 2007·Granted Apr 20, 2010·41 cites·17 claims
- 1393US9740139B2Powder container including a container portion to be engaged with a powder replenishing deviceHOSOKAWA HIROSHI·Filed 2014·Granted Aug 22, 2017·5 cites·34 claims
- 1493US8886095B2Powder container, powder supply device and image-forming apparatusKOMATSU MAKOTO·Filed 2012·Granted Nov 11, 2014·8 cites·25 claims
- 1593US8027596B2Image forming apparatusRICOH CO LTD·Filed 2010·Granted Sep 27, 2011·6 cites·11 claims
- 1693US4984974AScrew type vacuum pump with introduced inert gasHITACHI LTD·Filed 1988·Granted Jan 15, 1991·65 cites·8 claims
- 1792US8295742B2Powder container, powder supplying device, and image forming apparatusYAMAGUCHI DAICHI·Filed 2009·Granted Oct 23, 2012·11 cites·14 claims
- 1892US8290378B2Image forming apparatus having a magnetic field generating unit at the toner carrying sectionOHYAMA KUNIHIRO·Filed 2011·Granted Oct 16, 2012·8 cites·11 claims
- 1991US5572293AMethod of and system for cleaning a charge inducing memberRICOH KK·Filed 1994·Granted Nov 5, 1996·42 cites·53 claims
- 2091US5557373ACleaning system for charging drum of an image forming apparatusRICOH KK·Filed 1994·Granted Sep 17, 1996·41 cites·3 claims
- 2190US6505026B2Belt driving device and image forming apparatus using the sameRICOH KK·Filed 2001·Granted Jan 7, 2003·35 cites·17 claims
- 2289US12416878B2Information storage system including a plurality of terminalsRICOH CO LTD·Filed 2023·Granted Sep 16, 2025·0 cites·15 claims
- 2389US9405221B2Powder container and image forming apparatus incorporating sameKOMATSU MAKOTO·Filed 2013·Granted Aug 2, 2016·5 cites·23 claims
- 2489US8454136B2Ink cartridge and image forming apparatus employing the ink cartridgeKATOH TOMOMI·Filed 2010·Granted Jun 4, 2013·6 cites·15 claims
- 2589US8454142B2Liquid carrying container and image forming deviceBANNAI AKIKO·Filed 2010·Granted Jun 4, 2013·7 cites·18 claims
- 2689US4797068AVacuum evacuation systemHITACHI LTD·Filed 1987·Granted Jan 10, 1989·48 cites·9 claims
- 2788US8843034B2Toner container, toner container frame, and image forming apparatus incorporating sameYAMANE MASAYUKI·Filed 2012·Granted Sep 23, 2014·5 cites·15 claims
- 2888US5587405AInk compositionsYOSHINO KOGYOSHO CO LTD·Filed 1995·Granted Dec 24, 1996·58 cites·27 claims
- 2984US11768448B2Information storage system including a plurality of terminalsRICOH CO LTD·Filed 2022·Granted Sep 26, 2023·0 cites·31 claims
- 3084US8660441B2Information storage device, removable device, developer container, and image forming apparatusTAKAHASHI YASUFUMI·Filed 2012·Granted Feb 25, 2014·1 cites·17 claims
- 3184US6665512B1Image forming apparatusRICOH KK·Filed 2000·Granted Dec 16, 2003·19 cites·5 claims
- 3283US10725398B2Developer container having a cap with three portions of different diametersRICOH CO LTD·Filed 2019·Granted Jul 28, 2020·0 cites·20 claims
- 3383US8934813B2Image-forming apparatus and powder containerHOSOKAWA HIROSHI·Filed 2012·Granted Jan 13, 2015·3 cites·18 claims
- 3483US4767284AScrew vacuum pump unitHITACHI LTD·Filed 1987·Granted Aug 30, 1988·37 cites·12 claims
- 3581US11429036B2Information storage system including a plurality of terminalsRICOH CO LTD·Filed 2020·Granted Aug 30, 2022·0 cites·43 claims
- 3681US11275327B2Information storage system including a plurality of terminalsRICOH CO LTD·Filed 2021·Granted Mar 15, 2022·0 cites·21 claims
- 3780US11550239B2Powder container, powder supply device and image forming apparatusRICOH CO LTD·Filed 2022·Granted Jan 10, 2023·0 cites·7 claims
- 3880US10604682B2Hot-melt pressure-sensitive adhesiveHENKEL AG & CO KGAA·Filed 2016·Granted Mar 31, 2020·1 cites·4 claims
- 3980US6738412B1Mobile communications device, communications system, and communications methodMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted May 18, 2004·21 cites·20 claims
- 4079US10908531B2Powder container, powder supply device and image forming apparatusRICOH CO LTD·Filed 2019·Granted Feb 2, 2021·0 cites·19 claims
- 4179US8292414B2Ink cartridge and an imaging apparatusHAYAKAWA TADASHI·Filed 2009·Granted Oct 23, 2012·5 cites·15 claims
- 4278US10754275B2Apparatus and method for preventing an information storage device from falling from a removable deviceRICOH CO LTD·Filed 2018·Granted Aug 25, 2020·0 cites·20 claims
- 4378US6973316B1Position detecting method and apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Dec 6, 2005·42 cites·7 claims
- 4477US11249421B2Powder container, powder supply device and image forming apparatusRICOH CO LTD·Filed 2021·Granted Feb 15, 2022·0 cites·11 claims
- 4577US11188007B2Developer container which discharges toner from a lower side and includes a box sectionRICOH CO LTD·Filed 2020·Granted Nov 30, 2021·0 cites·20 claims
- 4677US10466623B2Powder container, powder supply device and image forming apparatusRICOH CO LTD·Filed 2019·Granted Nov 5, 2019·0 cites·19 claims
- 4776US11281124B2Powder container, powder supply device and image forming apparatusRICOH CO LTD·Filed 2021·Granted Mar 22, 2022·0 cites·8 claims
- 4876US8646886B2Ink cartridge and an imaging apparatusHAYAKAWA TADASHI·Filed 2012·Granted Feb 11, 2014·2 cites·17 claims
- 4975US9989887B2Apparatus and method for preventing an information storage device from falling from a removable deviceTAKAHASHI YASUFUMI·Filed 2017·Granted Jun 5, 2018·0 cites·16 claims
- 5075US9256158B2Apparatus and method for preventing an information storage device from falling from a removable deviceRICOH CO LTD·Filed 2014·Granted Feb 9, 2016·0 cites·33 claims
Showing the top 50 of 88 patent records by PatentIndex Score.
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